Can anyone tells me what were the great changes that take place in Asia during the middle ages?

What were the movements of peoples and the introduction of new cultures (especially religion) into the different regions of Asia ie; India, South-east Asia, China, and Japan?

And what impact did they have?

You may try wikipedia.org, (http://simple.wikipedia.org/wiki/Main_Page ) they have a large collection of articles on culture. You may also try the below link:

http://www.kidspast.com/world-history/0328-asia-following-middle-ages.php