I think it's the telephone because it allows people to communicate better and customers or workers don't have to walk up to everyone and disturb them. You may elaborate more on this with your own opinion
U.S. participation in NATO was a break with tradition, since the United States for the first time set itself up to automatically get involved in foreign conflicts--something that was very unnerving for a country of people who for most of American's history had been very isolationist.
To prevent the spread of communism to the south Vietnam
The answer is b. establish the English Parliament. The parliament was established before the
Magna Carta. The other three choices
were what the Magna Carta can do and has achieved. It still influences democratic doctrines and
was included in the United States Constitution.