Select the factors that contribute to increasing United States involvement in world affairs.

A: The Japanese-American Treaty

B: The Open Door Policy

C: The Boxer Rebellion

D: The Square Deal

E: The Panama Canal

F: Roosevelt's role as Mediator

a: the japanese-american treaty

b: the open door policy

c: the boxer rebellion

e: the panama canal

f: roosevelt's role as mediator

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.