Answer:
The Sumar were the first to make canals
Cold War, when the commies stoped all food from getting to Democratic Western Berlin
For economy more Americans lived in the cities than on farms. The nation’s total wealth more than doubled and economic growth put Americans into new consumer society. As far as culture...the 1920’s were roaring and cultural women became more sexually free. The 19th Amendment allowed women to vote.And millions of women worked on white collar jobs.
U.s history is important because an educated electorate is crucial to protecting and nurturing freedom. Historical study is important for many reasons. But for an American, the study of u.s history is particularly important. We need not all be scholars of the American revolution, but we do need an appreciation of what sets us apart from other countries and where we still need to improve.