Americans vs. Canadians

The big reasons for the differences between American and Canadian society are:

1. Apart from the common Native populations and British imperialism, Americans were influenced by Spanish imperialism ("Enslave 'em, take the gold") while Canadians got the French version ("Trade with 'em, marry 'em").
2. Every time Americans start a war (or civil war, or rebellion against the Crown), peace-loving Americans move north; every time there's an economic recession, money-hungry Canadians move south. Over 250 years that makes a difference.