A Christian army prevented Muslim armies from entering Europe near which city?

Explanation:

The battlefield was located somewhere between the cities of Poitiers and Tours, in Aquitaine in western France, near the border of the Frankish realm and the then-independent Duchy of Aquitaine under Odo the Great. Al Ghafiqi was killed in combat, and the Umayyad army withdrew after the battle.

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according to classical republican political theory, which democratic republics would function best?

a.   small republics, with people who had similar interests

b.   large republics, with people who had competing interests

c.   republics made up entirely of landowners

d.   republics made up entirely of servants