Well U.S history is not my optional neither do i know much about that.
But dont you think question itself tell you how to answer it.
means it says like.
Define and explain. or give various types of.
so by this way it tells you how to answer any question.
or if you want to know about heading? you can use headings n bullets and numbering for improving readability.
and try to write in straight lines. with reasonable spacing among lines (as answer sheets are blank and not lined) or still if you want to know something else. plz explain it clearly so that if any one knows the answer of your question, he/she may reply.
Regards.

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"The only necessary thing for the triumph of evil is for good men to do nothing."
--Edmund Burke (1729-1797)