How did the location of the gobi and taklamakan deserts, the himalaya mountains, and the pacific ocean impact early settlement in china?

As the Gobi and Taklamakan deserts were not good for agriculture, the early settlements of Chinese civilization were in the valleys of the Yellow river and the Yangtze River. This valleys and their easy acces to water proveded a fertile land for agriculture, the himalayan mountains and the Pacific ocean kept them isolated from other civilizations of the world and provided geographic protection.

so, colonists did not want to pay any taxes.  

colonists did not consider themselves british citizens.  

colonists felt no sense of obligation to britain.  

colonists objected to violations of their natural rights. are the answer choices?