I think it's the telephone because it allows people to communicate better and customers or workers don't have to walk up to everyone and disturb them. You may elaborate more on this with your own opinion
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
Down the great rivers that flow into the Baltic Sea. Then the sailors would portage (carry and drag) their ships between rivers, heading for southern flowing rivers, such as the Dneiper and Don,
C. Were not protected as promised by the United States. (apex)
Explanation:
