Louisiana became the 18th state to join the United States of America.
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The United States ratified the Louisiana Purchase.
President Thomas Jefferson announced the Louisiana Purchase to the public.
Florida, one of the confederate states, was readmitted to the Union.
The French ship named Aurore transported the first African slaves from Senegambia, West Africa, to Louisiana, US.
Louisiana enacted a law requiring all state classrooms to display the Ten Commandments.
