Why did the us stock market crash in 1929 affect other nations? a. war immediately broke out between many nations after the crash. b. other nations closed their own stock trading in fear that the same would happen to them. c. many nations relied on us investment capital that dried up after the crash. d. the united states soon refused to trade with other nations after the crash.

It can't be A, because the crash didn't really cause wars.

It can't be B, because no nation just "closed" their own stock trading. In fact, this isn't really how things work, even.

It can't be D, because the United Nations would not refuse to trade with other countries. Trading with other countries is part of the international politics of every single country.

So, truly, the answer is C, Many nations relied on US investment capital that dried up after the crash.

Those were disastrous times and many people and companies ran out of money. At vary least, many ran out of investment capital, therefore places that depended on that investment felt the blow just as much; and those places were many

the answer is c my brotha. c.   formed an alliance with the soviet union.