Answer:
Step-by-step explanation:
1: Items that were traded from China included silk, paper, and gunpowder. All of these were important with the inventions of cannons and guns, and eventually the Gutenberg press.
2: During the medieval era we traded them spices and possibly alcohol, and also the black plague (Not sure if this a benefit though)
3: Some ideas exchanged were Christianity and Buddhism from Tibet, which spread to India.