Like many other social media sites, Facebook revisited major moments from the year through the lens of the conversations happening on the site. Since Facebook says it is all about connecting, the look-back came with a forward-looking message about doing just that.
"The moments we shared in 2015 affected us all. They shocked, moved and inspired us to take action. They connected us," Facebook wrote. "Let's stand together in 2016."
Here's the list of the top topics discussed on Facebook in the United States. The site said the list was compiled by analyzing "how frequently a topic was mentioned in Facebook posts made between January 1 and December 1, 2015."
1. U.S. Presidential Election
2. Marriage Equality
3. Charleston Shooting and Flag Debate
4. Star Wars: The Force Awakens
5. Baltimore Protests
6. Planned Parenthood
7. Super Bowl
8. November 13 Attacks in Paris
9. Fight Against ISIS
10. Nepal Earthquakes
Facebook also released a list of the most talked-about topics in the world, many of them overlapping with the American list. Additions to that list included the debt crisis in Greece, along with the Syrian Civil War and refugee crisis.
The top athlete was Floyd Mayweather, Jr. followed by Manny Pacquiao after their historic boxing match in May, according to Facebook's Top Ten lists. The top entertainer was Ed Sheeran, the top place was Disney properties, and the top movie was the yet-to-be-released Star Wars: The Force Awakens.