The Great Wall of China was primarily built to protect against which threat?
A
Floods
B
Nomadic invasions
C
Earthquakes
D
Pirates
Correct Answer: Option B — Nomadic invasions
Explanation:
The Great Wall of China was constructed over centuries by various dynasties mainly to defend Chinese states against raids and invasions from nomadic groups such as the Mongols and Xiongnu from the northern steppes, marking and securing the empire's borders.