1800 - What happened in 1800 ?

March 1800

Friday 14:

Cardinal Barnaba Chiaramonti is elected Pope Pius VII

Friday 21:

With the church leadership driven out of the Rome during an armed conflict, Pius VII was crowned Pope in Venice with a temporary papal tiara made of papier-mâché.

April 1800

Wednesday 02:

Manhattan Well Mystery: In New York City, the trial of Levi Weeks ends with an acquittal. Weeks was defended by Alexander Hamilton and Aaron Burr.

Thursday 24:

The United States Library of Congress is established when President John Adams signs legislation to appropriate $5,000 to purchase "such books as may be necessary for the use of Congress".

June 1800

Monday 02:

First smallpox vaccination in North America, at Trinity, Newfoundland.

Tuesday 03:

U.S. President John Adams takes up residence in Washington, DC (in a tavern – the White House was not yet completed).

Saturday 07:

David Thompson reaches the mouth of the Saskatchewan River in Manitoba.

October 1800

Wednesday 01:

Spain cedes Louisiana to France via the Treaty of San Ildefonso.

Friday 17:

England takes control of the Dutch colony of Curaçao

November 1800

Saturday 01:

US President John Adams becomes the first President of the United States to live in the Executive Mansion (later renamed the White House).