The constitution dictates that the presiding officer of the senate is the

answer: the unlawful use of violence and intimidation, especially against civilians, in the pursuit of political aims.

explanation:

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omg right, you cant excpect some one to give you the right answer if you cant list them in the first place

rome's central location made it a center for trade through out the mediterain.

rome's lack of natural resouces encourgaged expansion and rome's geography priotected the city from invasion.