Why was slavery more important in general to the southerners than to northerners

In 1819, what did the united states obtain from spain for $5 million?

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?

The development of greek culture was most influenced by the dorian invasion the region’s climate and geography the trojan war indo-european migrations