What are two factors that influences where civilizations can start

answer; i believe that the correct answer is (decreased)

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

the answer is:

c. economic output