Why is this considered to be the most important position in the presidential cabinet?

What lured the spanish to the area of oklahoma?

How did the new working class of the industrial revolution differ from the working classes of the earlier, farm based economy?

Four score and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal. —"the gettysburg address," abraham lincoln which quotation correctly uses an ellipsis to shorten lincoln’s words?