Canadian Prime Minister Carney: To a large extent, Canada was born in response to the expansionary pressure of the United States. Canada's first prime minister, Sir John A. Macdonald, saw clearly the threat posed by American expansionism and worked hard to unify the land.

Canadian Prime Minister Carney: To a large extent, Canada was born in response to the expansionary pressure of the United States. Canada's first prime minister, Sir John A. Macdonald, saw clearly the threat posed by American expansionism and worked hard to unify the land.