Coal was needed to produce iron and to run steam engines
A. Slavery and states' rights
Answer:
After World War I, people needed to let loose in the 1920s (Roaring Twenties). Because drinking was outlawed under the 18th amendment, people founded speakeasies, which were venues to buy illegal drinks. More Americans lived in cities than in small towns. Jazz was becoming increasingly popular, and Harlem was dubbed the "Jazz Capital of the World." Women began to trim their hair and wear shorter skirts. They were known as flappers, or vamps if they were more intense. Buying on margin became popular, with "buy now, pay later," and the radio was the most popular item at the period. The KKK was extremely powerful at the time, with up to 4 million members, and it was the most powerful in the Midwest and South. People were also quite interested in aviation. Admiral Byrd was the first to fly over the South Pole, while Charles Lindberg was the first to fly alone across the Atlantic Ocean. Harding, Coolidge, and Hoover were all Republicans who served as presidents during this time period. The happy times of the 1920s came to an end with the 1929 stock market crash.
<span>Generally speaking, colonial unity and military readiness in the early battles of the Revolution lay the groundwork for international support, since before the colonists started winning battles against Britain many thought that they stood no chance to win the Revolution. </span>
