In spite of the rebellions of Upper and Lower Canada in 1837, the American Civil War to the south, and occasional Fenian raids, Canada was a relatively peaceful place between 1815 and 1866.
Construction of the Rideau Canal and Fort Henry, Kingston: 1832-1836
Rebellion in Lower Canada: 6-15 Nov 1837
Rebellion in Upper Canada: 5-16 Dec 1837
Battle of Grand Coteau—North Dakota: 12-14 July 1851