<span>During the late 19th and early 20th centuries, united states foreign policy was marked by intervention in affairs of Latin America.</span>
I think is D but I’m not sure
Having no context and never having been to Australia, I would assume that there is a lack of opportunities for proper "brick and mortar" based schools for some areas of Australia.
Again, no context and no first hand knowledge of the continent...so, take it as you will.
Because they are important to the American people and symbolize America in a whole