Answer:
A reason is becuase they were an important channel for ancient trade between East and West. Also, a second reason is because the Silk Road provided a strategic link for ancient eastern and western cultural exchange. Hope this answered your question!
Answer:
power outages
Explanation:
Living in an urban area, I have frequent power outages myself. Population density would be more in the city areas like japan. Lack of personal time would be a personal problem. Shortage of water is mainly in places like africa.
When you think of a channel think of trade. Or boats going up and down a stream, a channel is a body of water.