Editing History of North America (section)

==World Wars era==
{{main|Canada in the World Wars and Interwar Years|Mexican Revolution|History of the United States (1918–1945)}}

===World War I===
{{main|World War I|Canada in World War I}}
[[File:Young men registering for military conscription, New York City, June 5, 1917.jpg|thumb|Young men registering for conscription during World War I in [[New York City]], in June 1917]]
As a part of the [[British Empire]] Canada immediately was at war in 1914. Canada bore the brunt of several major battles during the early stages of the war including the use of [[Poison gas in World War I|poison gas]] attacks at [[Second Battle of Ypres|Ypres]]. Losses became grave, and the government eventually brought in [[conscription]], despite the fact this was against the wishes of the majority of [[French Canadians]]. In the ensuing [[Conscription Crisis of 1917]], riots broke out on the streets of [[Montreal]]. In neighboring Newfoundland, the new dominion suffered a devastating loss on July 1, 1916, the [[First day on the Somme]].

The United States stayed apart from the conflict until 1917, joining the Entente powers. The United States was then able to play a crucial role at the [[Paris Peace Conference, 1919|Paris Peace Conference of 1919]] that shaped [[interwar]] Europe.

Mexico was not part of the war as the country was embroiled in the Mexican Revolution at the time.

===Interwar years===
{{main|Roaring Twenties|Great Depression|Cristero War}}

The 1920s brought an age of great prosperity in the United States, and to a lesser degree Canada. But the [[Wall Street Crash of 1929]] combined with [[Dust Bowl|drought]] ushered in a period of economic hardship in the United States and [[Great Depression in Canada|Canada]].

From 1937 to 1949, this was a popular uprising against the anti-Catholic Mexican government of the time, set off specifically by the anti-clerical provisions of the [[Mexican Constitution of 1917]].

===World War II===
{{main|World War II|Canada in World War II|Military history of the United States during World War II|United States home front during World War II|SS Potrero del Llano|Faja de Oro|Escuadrón 201}}
[[File:British Columbia Regiment 1940.jpg|thumb|upright=.8|The [[The British Columbia Regiment (Duke of Connaught's Own) (RCAC)|British Columbia Regiment]] marching in [[New Westminster]], October 1940]] 
Once again Canada found itself at war before her neighbors, however even Canadian contributions were slight before the Japanese [[attack on Pearl Harbor]]. The entry of the United States into the war helped to tip the balance in favor of the [[Allies of World War II|Allies]]. On August 19, 1942, a force of some 6000, largely Canadian, infantry was landed near the French channel port of [[Dieppe, Seine-Maritime|Dieppe]]. The German defenders under General von Rundstedt destroyed the invaders. 907 Canadians were killed and almost 2,500 captured (many wounded). Lessons learned in this abortive raid were put to good use 2 years later in the successful Normandy invasion.

Two Mexican tankers, transporting oil to the United States, were attacked and sunk by the Germans in the [[Gulf of Mexico]] waters, in 1942. The incident happened in spite of Mexico's neutrality at that time. This led Mexico to declare war on the Axis nations and enter the conflict.

The destruction of Europe wrought by the war vaulted all North American countries to more important roles in world affairs. The United States especially emerged as a "superpower".