637

Europe

 * influence in greatly reduced or ended

Asia

 * defeated, eventually take Persian capital of
 * Muslim forces under
 * Muslim forces under
 * Muslim forces under  and took control of north-eastern.
 * , capital of becomes the largest city of the world, taking the lead from, capital of the.
 * builds first palace on the site of the Potala palace.

Deaths

 * , Chinese chancellor of the (born )