August 1842

Tuesday 09:

Webster-Ashburton Treaty is signed, establishing the United States-Canada border east of the Rocky Mountains.

Sunday 14:

Indian Wars: Second Seminole War ends, with the Seminoles forced from Florida to Oklahoma

Sunday 21:

The city of Hobart, Tasmania, is founded.

Monday 29:

The Tokugawa shogunate orders the local daimy? to begin providing foreign ships with fresh water and supplies when requested. (Traditional Japanese date: July 24, 1842).