Jimmy Carter was the first U.S. president to live to be 100 years old — a feat made even more incredible by the fact that he was alive for 40% of the nation’s history.

ATLANTA, Ga. (Atlanta News First) - President-elect Donald Trump’s inauguration on Jan. 20, 2025, will be historic in its own way, but the presidential oath of office’s 200-plus-year history is filled with unprecedented moments in American history.