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 …

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 …

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

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 …

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