Answer:
Towns developed near oases because they were a source of water and they need water to live and so do animals. They also can settle to farm and get food, bathing, etc
Explanation:
D) Most water and mud behave the same throughout time.
Answer:
B (Both countries have an economy based mainly on manufacturing.)
Explanation:
Nigeria is known as the giant of Africa and South Africa is the 2nd biggest.
The both countries are known for it's manufacturing, cultural and sports. There is one form of rivalry or the other going on between Nigeria and South Africa. In economic, sports or culture, Nigeria and South Africa always compete for that.
It was used to protect Athens from attacks :)