Why did Yongle move the capital to Beijing? to control trade across the Mongol empire to control trade across the Mongol empire to strengthen ties with lands outside China to strengthen ties with lands outside China to strengthen Ming rule over southern China to strengthen Ming rule over southern China to protect against future Mongol invasions

Yongle moved the capital to Beijing to strengthen Ming rule over southern China. This decision was also strategic in terms of protecting against future Mongol invasions, as Beijing was closer to the northern borders and would allow for greater defense against potential threats. Additionally, relocating the capital to Beijing helped to control trade across the Mongol empire and strengthen ties with lands outside of China.