The answer is A. a drought because during that time there was the Dust Bowl. The Dust Bowl was a time in America when there were massive dust storms which dirtied up any water.
The difference between the map during the early 1900´s was the way the early settlements where shown in Irish names, portraying the fact that the Irish population was second, right under the English. Pushed out of Ireland because of religious conflict back home, decided to come to America, after they were promised land and religious freedom in return for applying their knowledge.
That is when the fear of immigrants taking over started, since English population was not that bigger than the Irish.
During World War II, the federal government urged Americans to support the war effort by "<span>reducing consumption of resources needed for the military" among other things. </span>
U.S. human rights policy in the 20th and 21st centuries tried to balance the need to promote human rights abroad with the need to support military allies.
