I WILL GIVE U BRAINLIEST AND GIVE U A 5

Below are some results from China and Japan isolating themselves from outsiders. You don't have to respond to the portion that asks to explain two results of their decisions.
Instead, I would like you to tell me what they feared and who they feared or who they were worried about.

Results of their fears:

They didn't learn about new discoveries in other places, so they couldn't build on them.
They didn't have access to products from other parts of the world.
They didn't get the benefits of inventions and improvements in transportation and manufacturing.
They were protected from the spread of some diseases.
They were able to keep their cultures free of outside influences.
They did not share philosophical ideas with the rest of the world.