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The Battle of Lexington was the first battle of the American Revolution. It took place on the morning of April 19, 1775.

Abraham Lincoln was an American political leader during the 19th century. Rising from humble beginnings, Lincoln was elected as the 16th President of the United States in 1860. Lincoln's election prompted the secession of several Southern states and eventually the beginning of the American Civil War. Lincoln served as president and commander-in-chief throughout most of the conflict before an assassin's bullet tragically cut his life short on April 15, 1865.

Lieutenant General James Longstreet was one of Robert E. Lee's most trusted subordinates. However, his action -- or inaction -- at the Battle of Gettysburg created controversy that tarnished his military legacy in the eyes of many Southerners.

Key facts about Confederate General James Longstreet.