The most accurate answer is
D. In the northwest of the United States
In the 1800's most American's lived in the East Coast
The reason why most Americans moved to the east was because
most of them would be slaves or farmers looking for their own land. Some people worked for people though like some people would farm others land.
Glad to help :)
Grand Coulee Dam<span> is a gravity </span>dam<span> on the Columbia River in the U.S. state of Washington, built to produce hydroelectric power and provide irrigation water. It was constructed between 1933 and 1942, originally with only two powerhouses.</span>
Answer:
a general increase in prices and fall in the purchasing value of money.
Explanation:
Well....I would ASSUME that it's B. I'm just guessing here of course.
The name is Pre-Cambrian era