Harding emerged as a compromise candidate between the conservative and progressive wings of the party, and he clinched his nomination on the tenth ballot of the 1920 Republican National Convention. ... Harding virtually ignored Cox in the race and essentially campaigned against Wilson by calling for a "return to normalcy" .
The British. Because they promised them that they would limit the colonist westward migration. (Which they did not follow through with)
In the classic sense, American imperialism is a myth. The US never had a policy either stated or understood of importing cheap raw material and requiring vassal states or colonies to accept expensive manufactured goods, as did for England. The dominance of American culture and products in the mid 20th century was mostly the result of people in other nation craving the standard of living enjoyed in the world's largest democracy.
It paid more plus they wanted to be treated as equals
