By 1918 the USA had become the world's wealthiest and most powerful country, yet in 1929 it was the source of the Great Depression.
In the light of the above statement, explain briefly why the USA was so rich and
powerful, and then explain the causes of the Great Depression in 1929.
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The correct answer to this open question is the following.

Although there are no options attached we can say the following

It is true that by 1918 the USA had become the world's wealthiest and most powerful country after all the loans and deep debt of western European countries resulted from World War I.

However, in 1929,  the United States was the source of the Great Depression.

So as we have mentioned, the United States was so rich for the loans made during World War I, the size of its industry, and that western Europeans had a deep debt and owed too much money to the US.

During the 1920s, the US lived a fantastic economic period known as "the Roaring 1920s," in which people buy many necessary and unnecessary things, mostly on credit. We are talking about cars, houses, and electro domestics.

That generated a deep debt. On the other hand, the speculation of investors in the stock market created a bubble that could not be contained. And on October 29, 1929, the United States marked crashed, and this represented the beginning of the Great Depression, starting the worst economic crisis in the history of the United States.

After the US stock market crashed, millions of Americans lost their jobs, companies broke, and banks went into bankruptcy.

answer; /// i believe that they became successful farmers; ///////////////

the big stick policy was to still look powerful, and be nice at the same time. the big stick policy was also to countries who were at war, find peace with eachother.

the dollar diplomacy was to expand american business and get it to latin america, for that would be good for the economy.

you my friend, your regards.

agubaba khaleekha.