Final answer:
The expansion of the tribute system in the Ming dynasty required foreign rulers to acknowledge the Emperor's supremacy and led to hierarchical trade and political benefits.
Step-by-step explanation:
The expansion of the tribute system of the Ming dynasty between 1405 and 1433 meant that foreign rulers who wanted to trade with China had to acknowledge the universal supremacy of the Emperor. Another aspect of this event is that the tribute system was hierarchical, with China dictating the terms. Foreign visitors were expected to be obedient and respectful, while the Emperor was responsible for their well-being.
The tribute system was also used to pacify foreigners through rituals and trade. Foreign merchants, considered a lower social class, could only enter China as tribute bearers. This allowed them to trade with China and gain access to its rich market.
Additionally, the tribute system had political benefits. When a new king ascended the throne of a state that was a member of the tribute system, he would send an envoy to China. If the envoy was granted an audience, it validated the authority of the ruler who sent him. Returning home, the envoy would bring the Emperor's official seal, signaling the new status and authority of the ruler.