He vice president of the united states
One reason for the development of amn early civilization in the Tigris-Euphrates river valley was that.<span>periodic flooding </span>left<span> rich soil, which was ideal for farming.</span><span> </span>
Answer:Incumbent Democratic United States President Lyndon B. Johnson had been the early front-runner for his party's nomination, but he announced his withdrawal from the race after anti–Vietnam War candidate United States Senator Eugene McCarthy finished second in the New Hampshire primary.
Explanation:
The California Gold Rush brought some 300,000 people to California from the rest of the United States. Hope this helps!