WHAT HAPPENED IN 1841.
Look what happened the 1841.

Hong Kong Island is occupied by the British. (20. January 1841)

The United Kingdom formally occupies Hong Kong, which China later formally cedes. (26. January 1841)

A fire destroys two-thirds of Mayagüez, Puerto Rico. (30. January 1841)

The U.S. Supreme Court rules in the United States v. The Amistad case that captive Africans who had seized control of the ship carrying them had been taken into slavery illegally. (9. March 1841)

The National Bank of Greece is founded in Athens. (30. March 1841)

William Henry Harrison dies of pneumonia becoming the first President of the United States to die in office and with the shortest term served. (4. April 1841)

The Paris Opera Ballet premieres Giselle in the Salle Le Peletier (28. June 1841)

Coronation of Emperor Pedro II of Brazil, on 18 July. (18. July 1841)

U.S. President John Tyler vetoes a bill which called for the re-establishment of the Second Bank of the United States. Enraged Whig Party members riot outside the White House in the most violent demonstration on White House grounds in U.S. history. (16. August 1841)

The Sultan of Brunei cedes Sarawak to the United Kingdom. (24. September 1841)

Queen's University is founded in Kingston, Ontario, Canada. (16. October 1841)

James Braid first sees a demonstration of animal magnetism, which leads to his study of the subject he eventually calls hypnotism. (13. November 1841)