I was 1963 or 1964. This is because World War just finished about a decade ago and starting to form a peaceful country.
The correct answer is the 4th option (a more powerful central government that abided by rules).
The first option is incorrect because the government did not give more power to the states.
The second option is incorrect because a monarchy was not formed.
The third option is incorrect because, like the first option, the government did not give more power to the states.
The fifth option is incorrect because the government had an executive branch (the president).
Andrew Carnegie is a well-known for his philanthropy.
