Why did president roosevelt establish a second home in warm springs, georgia?

He thought that the springs would improve his health after polio.

Explanation:

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the answer is a glaciers carved a large valley that later flooded and became puget sound

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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