Canada became an independent nation by A. Winning a war against Great Britain.
B. Signing a series of treaties with Great Britain.
C. Buying the land from France.
D. Overthrowing Great Britain’s monarchy.

B

Explanation:

On July 1, 1867, with passage of the British North America Act, the Dominion of Canada was officially established as a self-governing entity within the British Empire. ... In 1885, the Canadian Pacific Railway was completed, making mass settlement across the vast territory of Canada possible.

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).

they were all fought in the middle east during ww1