Answer/Explanation: The rich plains these two rivers create made ancient India a good area for agriculture. They also supplied water for people, plants, and animals. This made the Indian subcontinent an ideal location for civilizations to develop.
-Bababooeyboy
<span>B Genghis Khan is your answer.</span>
James K. Polk was the president during that time
It made the United States work harder to be farther than the Soviet Union in the Space Race
<span>decimating the population, leaving the survivors wealthier</span>