Answer:
B
Explanation:
"The Great Wall was effective to some extent in warding off the invasion of nomads from the north"
Answer:
The benefit of physical environment to man are:
1.)It has provided us food,water shelter etc.
2.)It has also provided us air to survive.
3.)It has provided good view of nature,which hepls us to be free from strees.
Hope its helpful!
The erie canal is used in more ways the vack then