Answer:
The answer is "Manifest Destiny."
Explanation:
That doctrine states the right of the Unites States to expand westward and dominate the whole continent as design of divine Providence. The territorial expansion of the US boundaries was seen as something inevitable.
Ida Bell Wells-Barnett, more commonly known as Ida B. Wells, was an African-American investigative journalist, educator, and an early leader in the Civil Rights Movement. She was one of the founders of the National Association for the Advancement of Colored People.
In his "Great Arsenal of Democracy" speech, delivered on 29 December 1940, in the middle of the World War II, Roosevelt portrays the nations of Nazi Germany and its allies as aggressors and with a very different philosophy of government than American's, which consisted of violently dominating the world. He affirmed that If the Axis won the war, they would take over other continents nearby (Asia, Africa, Europe) and would bring enormous military and naval resources against the U.S. as well.
Consequently, the Axis power represented a threat to American society, and thus America, as the great arsenal of democracy, had a duty to help Britain fight the Axis by giving them military supplies while it stayed out of the actual fighting.
from brainly.com/question/2973921
