How does a caste differ from a class

In a caste system one can't be born a peasant and want to advance that would remain a peasant all their life. There isn't any flexibility in a caste system. While in a class you can literally go from rags to riches assuming wealth. Or you can lose wealth and become part of the lower class.  

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trade in silk, spices, and precious metals.

answer first choice

what differentiates athens from its neighbours is

1. they have a governmental whereby power is being shared by many.

2. athens serves as a good example to other cities.

pericles was termed as influential and also the prominent greek statesman and general athens which is between the wars of peloponnesian and persian.

in athenian society pericles had a profound influence which thucydides.