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

1800® Tequila is the world’s most awarded tequila family. With over 200 years of quality and tradition, 1800® is the original super-premium tequila.

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...

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.

United States presidential election of 1800, American presidential election held in 1800, in which Democratic-Republican Thomas Jefferson was elected as the country’s third president after …

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 …

The 1800 presidential election between Thomas Jefferson and John Adams—called the Revolution of 1800—marked a major turning point as power peacefully shifted between political parties for the first …

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

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