Britain was the country that had the most land claimed in both Africa and Asia. This article explains the way that England gained that land and how they managed their colonies.
The humans come to Pandora to mine Unobtanium. In doing this, they have to destroy the wildlife. The Na'vi people risk their lives to maintain their land. Colonel Quaritch is the "imperialist" that wants the resource.
This article talks about the meaning of Imperialism, and the colonization of the Europeans in Africa and Asia. All of the countries that took part in this act and the affect they had on the continents.
Roger Ebert's movie review talks to us about his experience with the movie Avatar. He talks of the overall message of the movie which he states is " flat-out Green and anti war message."