WHAT HAPPENED IN 1817.
Look what happened the 1817.

An army of 5,423 soldiers, led by General José de San Martín, crosses the Andes from Argentina to liberate Chile and then Peru. (19. January 1817)

Crossing of the Andes: Many soldiers of Juan Gregorio de las Heras are captured during the Action of Picheuta. (24. January 1817)

Las Heras crosses the Andes with an army to join San Martín and liberate Chile from Spain. (8. February 1817)

An Argentine/Chilean patriotic army, after crossing the Andes, defeats Spanish troops on the Battle of Chacabuco. (12. February 1817)

The New York Stock Exchange is founded. (8. March 1817)

Thomas Hopkins Gallaudet and Laurent Clerc founded the American School for the Deaf, the first American school for deaf students, in Hartford, Connecticut. (15. April 1817)

Opening of the first private mental health hospital in the United States, the Asylum for the Relief of Persons Deprived of the Use of Their Reason (now Friends Hospital) in Philadelphia, Pennsylvania. (15. May 1817)

The first Great Lakes steamer, the Frontenac, is launched. (5. June 1817)

In Rome, New York, construction on the Erie Canal begins. (4. July 1817)

The Bank of Montreal, Canada's oldest chartered bank, opens in Montreal, Quebec. (3. November 1817)

Mississippi becomes the 20th U.S. state. (10. December 1817)