Answer:
D. They have used irrigation to carry water from rivers to crops.
Explanation:
Irrigated agriculture is widespread in North Africa, about 28% of farmlands in North Africa are irrigated. For example, Libya has the largest irrigation project in the world, called the Great Man-Made River which supplies farmlands across Libya with freshwater for cultivation.
People in North Africa essentially, irrigated farming to make their land more suitable for agriculture.
Two things the GI Bill did for returning military personnel was giving them affordable education and providing affordable housing.
It demonstrated the importance of loyalty to ones country the answer is C.
The three symbols from the Angolan flag include: a cog wheel, machete and a star. These represent the regional variation of worker's tools, and workers tools in similar combination were also seen on the flag of the Soviet Union. It's also a symbol of communist, which is the mian reason why both countries adopted this flag.