The introduction of horses dramatically changed the lives and cultures of early great plains native americans.
Imagine that a country is fighting a war abroad: they need to have supplies sent to them. Those supplies need to be produced somewhere, and they're usually produced by the people back home, who also contribute to the war effort, but are not directly fighting. Those people are on the home front: at home but fighting.
For Canada, the home front would be in Canada.
Their relation was they thought that they were saviors.
It was primarily "D. WWI" that <span>postponed the suffrage movement in the beginning of the 20th century, since all energy and resources of the state were put towards this purpose. </span>
C. FDR believed that the federal government should take an active role in the economy; Hoover didn't.
President Herbert Hoover is what we call a sitting duck president which means he didn't do anything and believed in a philosophy called "Rugged Individualism". Rugged individualism basically means it's every man for himself and Hoover felt that Americans should figure their issues out by themselves and not rely on the government to help them out.