Final answer:
Qin Shi Huangdi built the Great Wall of China to address the Xiongnu attacks in northern China. He also used diplomacy to maintain peaceful relations with the Xiongnu.
Step-by-step explanation:
Qin Shi Huangdi, the first emperor of China, attempted to solve the problem of the Xiongnu attacks in northern China by building the Great Wall. He ordered the construction of a massive defensive wall to protect his empire from the Xiongnu nomadic tribes. The wall stretched over thousands of miles and served as a barrier to prevent further incursions. Additionally, Qin Shi Huangdi employed a strategy of diplomacy and negotiation to maintain peaceful relations with the Xiongnu.
Learn more about Qin Shi Huangdi's efforts to address the Xiongnu attacks