The American revolution was a war for independence that was sparked by the growing animosity and tension between 13 American colonies and their home country, Great Britain.
I'm not entirely certain, but I believe the Vietnam conflict was a symptom of the cold because of the still-firm belief that the United States held that <span>communism was threatening to expand throughout South-East Asia. In turn, Russia handed China weaponry as support, who then armed the Northern Vietnamese whom had gone to war with the North Americans. The United States got involved mainly due to that belief, as well as backing South Vietnam, who highly disagreed with the communism of North Vietnam, China and Russia.</span>
Under Coolidge the economy was great or boomed as the person above me said. Under his presidency the economy continued to grow and when the economy is great, inflation decreases, which means you can get more for your dollar. It was an era in which one would want to live in, economically speaking.
Hopefully this helped and good luck.