Answer: The 15th Amendment
Explanation:
The 15th Amendment, granting African-American men the right to vote, was adopted into the U.S. Constitution in 1870. Despite the amendment, by the late 1870s discriminatory practices were used to prevent African Americans from exercising their right to vote, especially in the South.
There was no unified state that could grow all parts of life equally so they had to depend on trade in order to get goods that they needed from each other since they couldn't develop all parts of production or manufacture. Ones would for example have a developed pottery industry while the others would have mastered making Olive oil so they would trade in order to get what they needed because they couldn't make it on their own.
Analyzing data collected by others.
A divergent plate boundary
