What do you think would be more effective in discouraging a Xiongnu invasion, walls or a large Chinese population along the border? Explain your thinking?

A large Chinese population along the border

Explanation:

Xiongnu was known for its war with China and occasional invasion. They knew the importance of horses in military and usually targeted them.

However Xiongnu invasion will be discouraged if a large Chinese population are at the border.

This is because they will be unable to get to where pastures, farm animals which were their main targets.

answer; did not understand that the act was wrong because she/he was suffering from a mental illness;

answer; jewish immigrants;