What was one impact of Marco Polo's visit to the Yuan dynasty and the book he wrote upon his return?

Marco Polo, having been deployed on a mission to China by emperor Kublai Khan, was able to hold a number of government positions in China, such as ambassador and governor of Yangzhou, a city in eastern China, and established mutual diplomatic connections for Europe with the East.

answer; researchers typically cannot control people's sexual behaviors as would be necessary in an experiment;