Basically, the reason of the 1929 wall street stock crash was economic imbalances and structural failings, which caused the companies were not able to pay off their Debts. The crashes directly resulted in the Great Depression , in which the people in United States really hard to find a job.
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I believe the answer is A: the first satellite launched into space.
Answer:
Creating local government
What is delta is 3rd option. what is map is 1st option.