<span>a.
Numerous
attempts to unite Greece under one government
b.
Frequent wars between city
-
states
c.
Heavy trade between city
-
states
d.
Increased efforts to establish Greek colonies overseas
</span>
Answer: The Tigris River and the Euphrates River
The U.S constitution didn’t protect their rights.
it is true my guy hope this helps
The answer is Physiological