At a time when many white politicians wanted to compromise on slavery, Abraham Lincoln said that wasn't possible.
The victim was one of Lincoln's former law clerks. The accused, who Lincoln defended, was the son of one of his prominent political supporters. It was complicated.
Four U.S. presidents have been assassinated while in office - all were brought down by gunfire. And each of these presidential assassinations helped usher in a wave of important reforms and a new political era.
Since 1950, individual income taxes have been the primary source of revenue for the U.S. federal government.
After President Lincoln's death, the First Lady's public grieving was seen as evidence that she was an improper woman.
The fears he raised about the future of the nation—including excessive debt, hyper-partisanship and foreign interference in elections—were remarkably prescient.
Here are the back stories to some of the most intriguing presidential renderings.
It’s not as if Congress didn’t try.
The history of public weeping after the deaths of celebrities.