Why didn’t Europe have a central government after Rome fell?

About 500 CE, much of western Europe was left without a strong centralized government due to the breakdown of the Roman Empire. As a result of the invasions, and a weak central government, a new social and political system known as feudalism developed.

Explanation:

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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