opinions

Minerals, Water supply, farm land, oil. Do you want me to keep going?

I think they wanted nothing and found it was an easy country to invade and knew the rest of the world would sit by and watch it happen.All they did is kill many innocent monks and blew up many temple.Chairman Mao said that religion was the opiate of the masses and wanted to rid Tibet of Budhism but that has not happened.

Yeah you westerners think Manchu conquered Tibet,China,Eastern Turkeystan and Mongolian so as Qing dynasty fell down everyone should be independent.I'll tell you from 19th century China and Qing became the same one because Manchu had assmilated into Chinese and they ruled the country together. As Manchu unified all these countries for more than 200 yeas the traditional borders had been broken for over 200 years.Many Han Chinese immigrated out of the Great Wall and Chinese were everywhere and there were also many other ehnic groups that have complicated relations with Hans and Uighurs and Mongolians and Tibetens.Uighurs and Tibetens especialy want Han Chinese out because of their independent culture But other ethnic groups except Turkic groups doesn't care about independent because they more infected by Han Chinese.They are mixed live now though conflict but cann't be separated just like the whites and blacks in the U.S.A. So who shall they decide the independence or dependence? You think Tibet is an independent country but I check many maps from Qing period and 1912-1949 issued by you western countries they put Tibet in China's territory only signed "Tibet" the same to Inner Mongolia and Eastern Turkeystan and Manchuria.You can have a look at wikimedia of "Qing Dynasty" "Republic of China". It means the world acknowledged Tibet belonged to China.

Resources.

They just think that it is naturally part of China. Right or wrong, they feel that China has "owned" Tibet for hundreds of years, and the Buddhist religious rule was just a local administration under Chinese overlordship, needing to be brought into the 20th century.