-
The United States Library of Congress is founded. It serves as the national library for the Unites States.
-
-
Thomas Jefferson purchases the Louisiana territory from France. This doubled the size of the United States.
-
-
The first wagons cross the continental divide on the Oregon Trail.
-
The Republic of Texas is annexed by the United States after declaring independence from Mexico in 1836.
-
-
The Civil War was fought primarily over the controversy over the enslavement of black people. It resulted in the abolishment of slavery.
-
Lincoln issued the final Emancipation Proclamation which declared all slaves free.
-
The Battle of Gettysburg was fought in Pennsylvania. It was the largest amount of casualties in the Civil War. It is regarded as the turning point of the war.