4. leaders in china and japan decided to cut off contact with other countries. they closed their borders and turned inward. explain their reasons for doing so and name at least two results of their decisions.

The reason they closed their borders because they did not want other people to other religions from other countries, they also didn’t want foreign ships coming to their own country. Both results of closing the borders is the fact that they were confined to just themselves and they couldn’t trade anymore.

the use of email to replace slower surface mail.