When World War I broke out in 1914, all Dominions of the British Empire, including Canada, were called upon by Great Britain to fight on her behalf. So, they kinda had to.
And start.ariot is right. Canada basicly had no choice. It was different in WWII, in which Canadian Parliament debated whether or not to go to war. Canada did, but the fact that she could make a choice was a major step in the growth of Canadian autonomy.
After spending the winter in Vinland, Leif sailed back to Greenland, and never returned to North American shores. He is generally believed to be the first
It was the refinement of the Bessemer process, first used in the United States in the 1860s, that allowed for the major advance in skyscraper construction. As steel is stronger and lighter in weight than iron, the use of a steel frame made possible the construction of truly tall buildings.