President Dwight D. Eisenhower was the first president to explain the domino theory, although he never actually called it the domino theory. He was explaining it in regards communism in Southeast Asia.
The Founding Fathers tried to create republicanism, when they divided powers between the judicial, legislative and executive branches. The correct option among all the options that are given in the question is the first option. Checks and balances is also very close to being the answer to this question.
The storming of the Bastille in 1789 kickstarted the period of violence that defined the French Revolution. That was a pretty big turning point, as the serfs finally attempted to use violence against the nobility and aristocrats.
Because the U.S supposedly helped other countries
People are recycling more and Car companies have developed hybrid cars
