Emperor Wu-ti launched attacks against groups that pose threats against the empire. He deemed this the right decision to solve the problem right away. He was determined to win and sent troops after troops into the battlefield. Because of this, he was able to expand China's control. On another hand, he also exhausted their resources due to allocating most of the empire's income to the military forces. He needed to look for another way to expand their income. He did this by passing a decree that the state can monopolize the salt, wine, and iron.
Well, he was in charge of the naval fleet, and the Emperor's favorite eunuch. He established many trade routes in the Mediterranean in 1405 to 1433.
America never would have happened
The greatest example of cutural diffisuion between India and China is adapatation of buddhism in China which was created in India.