What two factors limited china's contact with outsiders?

The two important factor that limited the China with having contacts with the outsiders are the following factors;

-          Long distances – the distance from outside were a hinder in which makes it difficult and makes the contract to be limited to the outside.

-          Natural barriers – this hinders China from travelling because of the physical feature that protects them or hinders them from travelling forth.

d. japan's attack on pearl harbor

one of the negative side effects were the economic losses the events of september 11th caused. many, many people lost their jobs as a result of a downturn in the economy after the terrorist attacks.