It began in 1939 and ended in 1945.
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>
The cotton gin allowed for the mass production of goods.
Answer:mate fank yew so mooch
Explanation:
It's began with the Spanish American war
