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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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 the path to war.

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

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 today as the...

The election of 1800 between John Adams and Thomas Jefferson was an emotional and hard-fought campaign. Each side believed that victory by the other would ruin the nation.

In the early 1800s, the world witnessed significant changes and events that shaped the course of history. The Industrial Revolution was in full swing, transforming societies from agrarian-based …

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

Jan 4, 2025 · The year 1800 marked a turning point in American history, with the election of John Adams, the Louisiana Purchase, and the growth of the economy. These events laid the foundation …

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