http://www.history.com/news/7-times-the-...o-peaceful
EXCERPT: The United States and Canada haven’t always been such peaceful neighbors. In fact, the creation of the autonomous Dominion of Canada on July 1, 1867, was driven in part by the failure of Great Britain to properly protect its colony from repeated American invasions. As Canada celebrates its 148th birthday, look back at seven occasions when the United States government or private American citizens clashed violently with their neighbors to the north....
EXCERPT: The United States and Canada haven’t always been such peaceful neighbors. In fact, the creation of the autonomous Dominion of Canada on July 1, 1867, was driven in part by the failure of Great Britain to properly protect its colony from repeated American invasions. As Canada celebrates its 148th birthday, look back at seven occasions when the United States government or private American citizens clashed violently with their neighbors to the north....