The U.S. won't elect a president until next year but the debate over the crowded field of candidates jostling for the Oval Office emerged as the hottest topic on Facebook this year.
The race for the Democratic and Republican party nominations eclipsed an outpouring of emotions over deadly attacks, strife, social issues and disasters.
The rankings released Wednesday open a window into the cultural mindset by analyzing how frequently specific high-profile events, politicians, entertainers, athletes, movies and TV shows were mentioned in the posts of Facebook's 1.5 billion users.
"This year, the most talked about global topics reflected the serious challenges people are facing all over the world — and how our global community is connecting and coming together in ways we have never seen before," said Sheryl Sandberg, Facebook Inc.'s chief operating officer.
In addition to discussing Facebook's Year in Review in an interview on NBC's "Today" show Wednesday, Sandberg opened up about the death of her husband, Dave, this past May and her subsequent decision to post publicly about her grief on the social network.
"As I look to the new year, and my children and I have worked so hard to rebuild our lives and find happiness and joy and gratitude again, I think the support of strangers and our friends made a huge difference," Sandberg said. "I always loved Facebook's mission, but now I feel even closer to it in, I think, a much deeper and more profound way."
Sandberg posted a deeply personal message on her Facebook page in June, 30 days after her husband's death, that chronicled her grief in the first month after her loss.
"I wasn't sure if I was going to post it, but I did," Sandberg said. "I hit send on the 30-day anniversary of his death, which has meaning in the Jewish religion. I shared how to talk to me and how I was feeling. And it changed a lot. People knew what to say. People started talking to me more openly. And even strangers, because I'm not the only person who experienced loss this year or in previous years."
Google, the owner of the Internet's dominant search engine, will provide another snapshot of what people were thinking and talking about when it releases its annual breakdown of the year's most frequent requests for more information.
Here's a glimpse at how the world looked on Facebook this year:
The polarizing candidacy of billionaire former reality-TV star Donald Trump helped drive early interest in who will win next year's race to succeed President Barack Obama. Facebook says last week's shootings in San Bernardino didn't trigger enough discussion to break into the top five.
1. U.S. presidential election
2. Nov. 13 attacks in Paris
3. Syrian civil war and refugee crisis
4. Nepal earthquakes
5. Greek debt crisis
British singer Ed Sheeran doesn't have as many followers as Taylor Swift and other singers on Twitter but the voice behind the Grammy-nominated song "Thinking Out Loud" topped Facebook's charts this year. All five of the top spots were held by singers.
1. Ed Sheeran
2. Taylor Swift
3. Kanye West
4. Nicky Jam
5. Wiz Khalifa
TOP TV SHOWS
No surprise here after the HBO series "Game of Thrones" enthralled audiences during its fifth season and won a record 12 times, including the prize for best drama, at the Emmy awards in September.
1. "Game of Thrones"
2. "The Walking Dead"
3. "The Daily Show"
4. "Saturday Night Live"
5. "WWE Raw"
The anticipation for the Walt Disney Co.'s revival of the "Star Wars" franchise loomed over theaters like the Death Star for most of the year, even though the film won't be released until next week.
1. "Star Wars: The Force Awakens"
2. "Furious 7"
3. "Jurassic World"
4. "Avengers: Age of Ultron"
5. "American Sniper"
The long-awaited May duel between two of the past decade's best boxers captivated sports fans.
Reflecting Facebook's worldwide reach, none of the most popular pastimes in the U.S. placed an athlete in the top five. New England Patriots quarterback Tom Brady came in sixth place on Facebook's list, while Golden State Warriors guard Stephen Curry occupied the seventh spot to beat the Cleveland Cavaliers' LeBron James in the basketball arena.
1. Boxer Floyd Mayweather Jr.
2. Boxer Manny Pacquiao
3. Mixed martial arts fighter Ronda Rousey
4. Soccer star Lionel Messi
5. Soccer star Cristiano Ronaldo
Fascination over who might replace him next year wasn't enough to overshadow the current U.S. president as he wrapped up in his penultimate year in office.
1. U.S. President Barack Obama
2. Republican presidential candidate Donald Trump
3. Brazil President Dilma Rousseff
4. Democratic presidential candidate Hilary Clinton
5. Democratic presidential candidate Bernie Sanders