Andrew Johnson never expected to be president. But just six weeks after becoming Abraham Lincoln's vice president, the events at Ford's Theatre thrust him into the nation's highest office.

A Unionist Democrat from Tennessee, Andrew Johnson was put on the ticket by Lincoln in 1864 in an effort to reach union sympathizers in the Border States. Challenges: Andrew Johnson had to navigate ...

For the first time in history, the United States House of Representatives impeached a sitting president, Democrat Andrew Johnson ... Booth assassinated Abraham Lincoln, on April 15, 1865.

A Southern supporter of the Union who balanced the ticket in Abraham Lincoln's 1864 reelection, Johnson led the Southern Reconstruction effort following the president's assassination. Conflicts ...