Why do most people in china live on the north china plain?

They do not.

Explanation:

Look at map of China population density, eyes will let it make sense.

yes based on alexanders actions he deserved the title of "the great". his empire covered about 3,000 miles and he was able to establish the empire over a 13 year period of time. he was able to conquer many different places. he also defeated the persians. he conquered egypt and developed a city and named it after himself.