Why are the Dirty 30s important to Canada and the U.S.?

The Dirty 30s are important to both the United States and Canada. One reason was because the Great Depression existed during this time. Each country was ravaged by the financial collapse and the subsequent loss of jobs. Many people went hungry and lost much of what they had. Both governments would have to deal with the effects of the Great Depression by becoming more involved with the economy.
This was also a time when dictators were coming to power in Europe and Asia. Japan was invading Manchuria in 1931 and parts of China in 1937. Italy and Germany also were taking over land as their leaders pursued an aggressive foreign policy. Italy took over Ethiopia in 1935 while Germany moved into the Rhineland in 1936 and took over Austria in 1938. Eventually, the United States and Canada would need to deal with these actions that led to the start of World War II. Both Canada and the United States fought on the side of the Allies during this war.
https://www.thecanadianencyclopedia.ca/en/article/great-depression