Its no question that 2020 has been a historic year for the U.S., but how it will affect the future remains to be seen.

In an effort to take stock of where this year fits into history so far, TIME asked historians nationwide to pick a moment in 2020 that stands out to them. We asked them what future historians willor at least shouldwrite about when they study the momentous year that is drawing to a close, and whether it signals a new chapter or turning point for America and the world.

Below is what the historians who spoke with TIME, as of early December, identified as the major milestones of 2020:

U.S. President Donald Trump holds up the front page of USA Today that displays a headline "Acquitted" as he arrives to speak at the 68th annual National Prayer Breakfast on February 6, 2020.

Nicholas Kamm/AFPGetty Images

Trumps acquittal in his impeachment trial by the Senate on Feb. 5, 2020, is a really important moment both within American history and for what it says about Trumps success at imposing an authoritarian style political culture on the Republican party. With only one contrary vote by [Utah Sen. Mitt] Romney, everyone else unanimous. You couldnt ask for a greater legitimation of his political style.

Sen. Sherrod Brown wrote a really interesting op-ed in the New York Times saying his Republican colleagues were afraid and told him that they acquitted Trump out of fear, not because they really believed he should be acquitted. If you compare it to what happened to Nixon, the difference is you have this authoritarian personality that has managed to take hold.

For historical comparison, some of the other rulers who have done this successfully created their own parties or had leadership roles within their parties for years before they became head of state. Mussolini created his own party. Berlusconi was able to do this, he created his own party. But Trumps achievement is even greater because the GOP has a very long history, and we only have two parties, and yet he was able to tame it and make it his own.

Ruth Ben-Ghiat, Professor of History and Italian Studies at New York University

Medical staff members check on a patient at the COVID-19 Intensive Care Unit (ICU) of United Memorial Medical Center in Houston, Texas, on Nov. 8, 2020.

Go Nakamura/BloombergGetty Images

For me the critical turning point in this pandemic was its very early days, when we still didnt know whether this would turn into a full-blown pandemic. My last 20 years spent reading, writing and teaching about the history of pandemics had taught me what to expect. Since day one, when news about a cluster of pneumonia cases in Wuhan started circulating, I was intellectually, practically and emotionally prepared to face a pandemic. That was almost a year ago. I religiously followed Johns Hopkins Universitys COVID-19 dashboard to track the number of cases and deaths worldwide, and already in late January knew we were in for a global pandemic of historic proportions.

Ironically enough, I was then teaching a course on the history of pandemics. In that class, my students and I declared COVID-19 a global pandemic long before WHO did (March 11), because we could clearly see all the signs in that direction. I prepared my students and myself for what was to come. But despite obsessive caution, I was infected as a result of travel in early March, even when there was a total of about 250 reported cases across the U.S. Premodern plague treatises, written about an unfamiliar and far deadlier disease, taught me that good food, good rest and good thoughts were critical for recovery. I was lucky to have both historical and contemporary knowledge for guidance.

That was more than eight months ago. Since then, Ive been reading, writing and teaching about this pandemic, constantly stressing the importance of historical knowledge for its modern management.

Nkhet Varlk, Associate Professor of History at the University of South Carolina and Rutgers University-Newark.

The historic May 30, 2020, launch of the manned SpaceX Crew Dragon spacecraft from the Kennedy Space Center in Cape Canaveral, Florida.

SpaceXGetty Images

Two astronauts, Robert Behnken and Douglas Hurley, were launched from the Kennedy Space Center in Florida in a commercially-developed spacecraft, the Crew Dragon, atop a Falcon 9 rocket at 3:22 ET. The Crew Dragon achieved earth orbit in 12 minutes, and docked less than 19 hours later at the International Space Station. The lift-off was watched by an estimated 10 million people worldwide. Although both Behnken and Hurley were veterans of the National Aeronautics and Space Administration (NASA), the flight was the first joint public-private crewed space mission under NASAs Commercial Crew Program. The Crew Dragon was funded and created by Elon Musks Space Exploration Technologies Company (SpaceX). It was also the first crewed American lift-off since the cancellation of the space shuttle program in 2011, and was seen as the presage of a new era of private investment and development in space flight, including commercial and passenger traffic in space.

Allen C. Guelzo, Director of the James Madison Program Initiative on Politics and Statesmanship at Princeton University

Thousands of protesters walk across the Brooklyn Bridge on "Juneteenth," June 19, 2020, as part of one of the many protests against police brutality and in support of the Black Lives Matter movement that have taken place in 2020.

Ira L. Black/CorbisGetty Images

When historians reflect on 2020, they will recognize it as a pivotal year for several reasons: a global pandemic, a historic presidential election and a year of protest against racial injustice.

After the deaths of George Floyd, Ahmaud Arbery, and Breonna Taylor, and (too) many others, people took to the streets demanding an end to police violence against African Americans. They showed up in large cities and small towns across America, with chants of Black Lives Matter or Justice for Breonna Taylor. Motivated after witnessing Minneapolis police officer Derek Chauvin choke the life out of Floyd by kneeling on his neck for eight minutes and 46 seconds, people marched. This was a key turning point.

Just like the water hoses and police dogs of the 1960s Civil Rights Movement, Floyds death presented evidence of senseless violence by law enforcement. It became a record-breaking year of protest against police violence. And, COVID-19 did not stop people from marching, chanting, singing, speaking and demanding justice and reform. These events represent the largest protest movement in United States history as experts say by midsummer, 15-26 million people had marched.

Daina Ramey Berry, Chair of the Department of History at the University of Texas at Austin

U.S. President Donald Trump poses with a Bible outside St. John's Church near the White House in Washington, D.C., on June 1, 2020.

Shawn Thew/EPA/BloombergGetty Images

In 2020 we witnessed protests all over the country against racism and police brutality. In Washington D.C., the White House was surrounded by crowds. A couple of days before, the Secret Service had taken the President to an underground bunker as a precaution. On June 1, 2020, the Park police and National Guard cleared the way for Trump to walk to St. Johns Church to have his picture taken while holding a Bible, as one would hold a brick to gauge its weight.

The performance was intended to send a signal to his supporters, linking religion and a strong presidential hand against forces they defined as anti-American. In fact, the Presidents authority shifted to an increasingly authoritarian and violent stance. Trump would continue during the rest of that year to encourage the use of violence against Black Lives Matter protesters. As it became clear that his followers did not control the streets, however, the rest of his presidency became one protracted attempt to build a dictatorial authority that was eventually frustrated by the elections. In historical perspective, the St. Johns Church gesture had exactly the opposite significance of its intended meaning: it represented a withdrawal from which Trump would not be able to return.

Pablo Piccato, Professor of History at Columbia University

The image of George Floyd along with the Black Lives Matter letters are projected onto the Robert E. Lee Statue on Monument Avenue in Richmond, Virginia, on June 10, 2020.

John McDonnell/The Washington PostGetty Images

The reclamation of the Robert E. Lee statue in Richmond, Va., and the creative way in which the protesters associated with and led by BLM movement were protesting police brutality against Black Americans. The statues meaning was ultimately subverted because it was spray-painted, images were projected on it of George Floyd and historical figures, Harriet Tubman, Frederick Douglass. It refocused the conversation towards the continuity of this historical struggle that Black Americans have faced both in Richmond and the commonwealth of Virginia, but also nationally as well. It became a site of black joy, almost a pilgrimage site. There were many stories about families driving hours to show their children this new location. A sterile middle-of-the-road thing that nobody ever actually used became a place of BBQs and parties and protest and civic involvement.

When monumental spaces have been reclaimed in the past, the structures have been pulled down. Theyve been destroyed. Thats not what happened here, it was repurposed, and I think that shows how monuments function as public signs of power and centers of civic responsibility. The defenders of Confederate monuments have always said theyre just part of the landscape. This shows that thats really absolutely not the case. They time travel in a way. These monuments were constructed in the past and exist in the present. They are physical manifestations of this long history, that goes back in this particular case to the early 20th century, nostalgia for the Lost Cause and the Confederacy.

I see the reclamation of the Robert E. Lee statue as a piece of what the 1619 Project has done too. Both have made us talk about American History in a very different way now.

Matthew Gabriele, Professor of Medieval Studies and the Chair of the Department of Religion and Culture at Virginia Tech.

The court and benches are empty after the scheduled start of game five between the Milwaukee Bucks and the Orlando Magic in the first round of the 2020 NBA Playoffs at AdventHealth Arena at ESPN Wide World Of Sports Complex on August 26, 2020 in Lake Buena Vista, Florida.

Ashley Landis-PoolGetty Images

Amid an unprecedented national movement for racial justice in the summer of 2020, we witnessed one of the most important political statements in the history of American sport. On Aug. 26, three days after police in Kenosha, Wisc., shot 29-year old Jacob Blake in the back seven times in front of his three young sons, the Milwaukee Bucks refused to participate in a scheduled playoff game to draw national attention to the issue of police brutality and to push state authorities to hold officers accountable for Blakes shooting.

The NBA and the WNBA had been among the most visible and vocal public supporters of the Black Lives Matter Movement since the killing of George Floyd by Minneapolis police in late May, and soon other mens and womens teams refused to play in the playoffs, defying their collective bargaining agreements and leading to the largest wildcat strike in recent history. These protests against racism and police violence soon inspired similar actions in the majority-white Major League Baseball and National Hockey Leagues. The sports demonstrations are profound expressions of a new, multiracial coalition of Americans calling for racial justice and an end to inequality. 2020 will be remembered as one of the most challenging years in modern history, but also one when new conversations about systemic racism and new forms of collective action, arising in unexpected places, may help put the nation on the path toward meaningful change.

Elizabeth Hinton, Professor of History, African American Studies, and Law at Yale University

Vice President-elect Kamala Harris takes the stage before President-elect Biden addresses the nation from the Chase Center on November 7, 2020 in Wilmington, Delaware.

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A century after the 19th Amendment, Kamala Harris finally broke the glass ceiling. As the first woman of African and South Asian descent to serve as vice President of the U.S., Harriss election evokes past trailblazers in womens history.

Along with Shirley Chisholmthe first African American Congresswomanwe should also remember Patsy Takemoto Mink, the first woman of color in the House of Representatives and the namesake for Title IX. Mink and Chisholm both ran for the U.S. presidency in 1972, and both women traced their family connections to islands, located off the continental mainland of the U.S. Mink was a third-generation Japanese American, born on the territory of Hawaii before the islands became the 50th state. Growing up in a plantation society, located in the middle of the Pacific Ocean, deeply shaped Minks commitment to advocating for worker rights, womens rights, racial equality and environmental protection, particularly against military uses of islands as test sites for nuclear and conventional weapons. Like Mink, Harriss parents originated from former colonies (Jamaica and India), which brought them together out of concern for racial justice. We should recognize Harris as a woman whose personal and political lineage stems from anti-imperial circuits of migration and activism. Along with Mink and Chisholm, Harris is a first. And as she promised, she wont be the last.

Judy Tzu-Chun Wu, Director of the Humanities Center and Professor of Asian American Studies at the University of California, Irvine

U.S. Senate Majority Leader Mitch McConnell (R-KY) takes questions as he speaks during a news conference with other Senate Republicans at the U.S. Capitol on December 15, 2020, in Washington, D.C.

Tom Brenner/PoolGetty Images

For the first time, the majority of a partys elected officials refused to accept the results of the election and some openly called for ignoring the will of the voters to maintain power. Even in 1860, secessionists acknowledged Lincoln had won the election as they tried to break the nation in two. Ever since the defeated John Adams gave up power willingly in 1800, no American President has refused to acknowledge defeat. While Trump appears to have failed in his effort to subvert democracy (whether we call it a failed coup or an autogolpe matters less than the impact), the lack of repercussions for undermining democracy is a continuation of the Republican Partys abandonment of principles and democratic norms. Trumps ignoring of norms isnt new, Senator Mitch McConnell eroded them during President Barack Obamas administration, and while perhaps the 2000 election foreshadowed, 2020, now the pretense is gone. The subtext is text; a radical acceleration of the antidemocratic impulse means power is all that matters to the GOP and there is not even lip service given to the will of the voters. With baseless claims of fraud, our democratic system has been further eroded even after the election is over. The GOP has abandoned a strategy of attracting some voters while disenfranchising others and moved to undermining democracy as a system entirely. I fear what happens as the party continues to abandon a fundamental bedrock of democracy in new and more dangerous ways. While our system appears to be stronger than some feared, it also remains far weaker than others claim.

One key question for 2021 is whether Trump and those who enabled him are held accountable for all of his corruption. If not, I fear for democracys future. As next time around, kleptocrats may feel empowered to take and hold onto power, and they might succeed.

Adam H. Domby, Assistant Professor of History at the College of Charleston

American Indians of the Navajo Nation pick up supplies at a food bank set up at the Navajo Nation town of Casamero Lake in New Mexico on May 20, 2020.

Mark Ralston/AFPGetty Images

The onset of the COVID-19 pandemic in early 2020 represents a crucial moment in American Indian history that future historians must address. The pandemic touched off unprecedented responses in Indian Country to mitigate the deadly effects of that viral scourge. Conditions including underlying health issues, inadequate healthcare, poverty, overcrowded housing, a lack of indoor plumbing, shorter life expectancies than other Americans, high rates of uninsurance, unresolved historical grief, and reckless federal and state responses to the pandemic that left them more at risk to become ill and die than other Americans. Carrying oral histories about devastating past pandemics and rejecting COVID-19 conspiracy theories, American Indian and Native Alaskan governments started to exercise their sovereignty in significant ways in hopes of stopping the viruss spread and saving lives. Their proactive measures included blocking non-residents from entering reservation lands, shutting down non-critical services, establishing work at home initiatives, setting curfews, mandating mask wearing, closing and reopening casinos with new health protocols in place, successfully suing the Trump administration to release federal funds designated for Indian Country for COVID relief, and lobbying the federal government to uphold its trust obligations to protect Indian nations from harm.

James Riding In, Associate Professor at Arizona State University and a citizen of the Pawnee Nation

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Write to Olivia B. Waxman at olivia.waxman@time.com.

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How 2020 Will Go Down in the History Books, According to Historians - TIME