Answer:
The Cuo recommends to detect intrusion of enemies by surrounding them by sandy fields.
Explanation:
Chao Cuo was a Chinese politician, philosopher and writer who worked during the Han Dynasty. Many of his writings address the Xiongnu nomads of the North, who were a pressing concern for China during the Han dynasty. He also proposed a policy that would populate and defend frontier zones. The advisor was murdered in an attempt to mitigate the Rebellion of the Seven States.
Many fled political and religious persecution. Others hoped to improve their condition by owning their own land or by participating in the fur trade. Some came as servants.
I think B preventing nuclear war
The Pawnee is a Native American tribe in Nebraska and Kansas. But in 1874, they've been moved to Oklahoma. They used to serve the Army against the European expansion.
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The different environmental sections of the Incan Empire treated with each other.
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