I think it is A tell me if I am wrong.
Indian tribes had reservations with defined borders. These borders were
able to be changed at any time, but they were still defined nonetheless.
These reservations were usually much smaller than the area in which the
tribes used to live, answer (A).
The Open Door Policy is a term in foreign affairs initially used to refer to the United States policy established in the late 19th century and the early 20th century, as enunciated in Secretary of State John Hay's Open Door Note, dated September 6, 1899 and dispatched to the major European powers.[1] The policy proposed to keep China open to trade with all countries on an equal basis, keeping any one power from total control of the country, and calling upon all powers, within their spheres
Although the relationship between the United States and the Soviet Union was friendly during the time of World War two, the Soviet Union and the US were allied during World War two, based on the common aim of defeating Nazi Germany. this is because their alliance was essential to defeating Nazi Germany, as the US and Great Britain both needed a strong power at the eastern frontiers of Germany to secure Nazi defeat. At this point in the war, it was beneficial for both the soviet union and the united states to enter into an alliance with each other since the Soviet Union was under attack by the Nazis, and the United States and its allies needed another strong ally. it seems like both countries had trouble accepting the ideology of the other, as they each had completly different political policies and types of governments, but were trying to attempt accepting each other for the sake of defeating the Nazis and ending the war on the European frontier. This relationship between the two nations, and the shared sacrifices, eventually led to the end of world two in the western frontier as Germany was drained on both fronts. This relationship that was based on benefit would end the war, as the two nations will have different opinions regarding postwar issues.