Answer:
I think it might be
Surrounding seas allowed people to set up ports for trade.
The location near the sea allowed people to interact with other civilizations.
A lack of flat land made people dependent on trade to survive.
Explanation:
Edit: dont listin to me im wrong im pretty sure
The 3/5ths compromise was the law that designated how slaves were to be treated and represented. Previously an African American was counted as only 3/5ths of a person, hence the name of the compromise.
It was called the open door policy made by Deng Xiaoping allowing foreign businesses to bet set in China paying a very low tax
training in military tactics and weapon