As of the start of 1800, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.

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Historical events from year 1800. Learn about 37 famous, scandalous and important events that happened in 1800 or search by date or keyword.

May 2, 2025 · October 16, 1859: Abolitionist John Brown (1800–1859) leads a raid on Harpers Ferry, Virginia, hoping to initiate a revolt of enslaved people. This revolt would put the U.S. on …

On November 1, 1800, President John Adams, in the last year of his only term as president, moved into the newly constructed President’s House, the original name for what is known …

United Kingdom of Great Britain and Ireland established with one monarch and one parliament; Catholics excluded from voting. Agreement bearing Napoleon's signature.

Events from the year 1800 in the United States. January 7 – The Virginia General Assembly adopts the Report of 1800, a resolution drafted by James Madison arguing for the sovereignty …

What happened in the year 1800 in history? Famous historical events that shook and changed the world. Discover events in 1800.

What happened and who was famous in 1800? Browse important and historic events, world leaders, famous birthdays and notable deaths from the year 1800.

How did the economic transformations of the 1800s contribute to the rise of a distinct middle class in America? The economic transformations during the 1800s included rapid industrialization …