What happened when the stock market crashed in October of 1929? Most banks panicked and bought more stocks.
Most investors panicked and sold all their stocks.
Most investors calmly put their money into banks.
Most banks calmly invested to help the stock market.

b

Explanation:

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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the award is named for an american naval historian and theorist, rear admiral alfred thayer mahan, united states navy who, through his writing, provided stimulus and guidance to those who share in the defense of the nation.