|( 1800s: ) 1800|
The human population closes in on 1 billion.
- World population approaches the 1 billion milestone which it will attain in 1802. The population distribution by region:
- Africa: 107,000,000
- Asia: 635,000,000
- China: 300–400,000,000
- Europe: 203,000,000
- Latin America: 24,000,000
- Northern America: 7,000,000
- Oceania: 2,000,000
- January 1 The Dutch East India Company dissolves.
- February 7 – A public plebiscite in France confirms Napoleon as First Consul, by a substantial majority.
- March 20 – Alessandro Volta describes his new invention, the voltaic pile, the first chemical battery, in a letter to the Royal Society of London.
- April – Voting begins in the 1800 United States presidential election; it will last until October. The result is not announced until February 1801.
- May 15 – Napoleon and his French army (40,000 men)—not including the field artillery and baggage trains—(35,000 light artillery and infantry, 5,000 cavalry) begin crossing the Alps. He selects the shortest route through the Great St Bernard Pass, and invades after five days traversing the northern region of Italy.
- July 2 – The Union with Ireland Act 1800 is passed by the Parliament of Great Britain; the Irish Parliament passes similar legislation in the following month, uniting the two kingdoms and abolishing the Parliament of Ireland.
- August 1 – King George III gives royal assent to the second Act of Union to unite the Kingdom of Great Britain and Kingdom of Ireland (both ruled by him) into the United Kingdom of Great Britain and Ireland, effective on January 1, 1801.
- September 4 – The French garrison in Valletta surrenders to British troops, who had been called at the invitation of the Maltese. The islands of Malta and Gozo become the Malta Protectorate.
- November 22 – War of the Second Coalition: Hostilities resume.
December 3 - United States presidential election, 1800: The Electoral College casts votes for president and Vice President that results in a tie between Thomas Jefferson and Aaron Burr, requiring a contingent election which will select Jefferson as president.
- December 24
- The Plot of the rue Saint-Nicaise fails to kill Napoleon Bonaparte.
- Pierre Coudrin and Henriette Aymer de la Chevalerie found the Congregation of the Sacred Hearts of Jesus and Mary in Paris.
|Bank of France|
A Group that was Wound Up
|University of Ingolstadt||Education|