Why is the great wall of China needed

The Great Wall of China was built as a military defensive line to defend the invasions from some northern nomadic nations.

Explanation:

Apart from the function of defense, the wall also boosted the economy, as well as promoted the culture exchange and national integration of different nations at its two sides.

answer; ///(1) blank; henry clay; (2) blank; secretary of state; (c)is your answer; ///good luck

the correct answer that would best complete the given statement above would be option b. expanding civil services. diocletian and constantine paved the way for foreign invasion by dividing the empire, creating administrative bureaucracies and reorganizing the military, except for expanding civil services. hope this answer .

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explanation: