Imperalism in Avatar

Imperialism is used in Avatar the movie. It is being used cause the Army want's the Na'Vi's biggest tree in their land.The big tree is really special to the Na'Vi  people. The Amry wants it cause under the tree their is a special rock that the human really want. They ask the Na'Vi's if they could destroy the tree so they could retreve the special rock. They said NO!! So the soldiers go throw so much to make avatars that look exactly like the Na'Vi people. So they can get close to them and see how they act.It might seem like a good motive to learn about their culture, etc. But they are just using them to gain control of them and be able to get the rock. The Army losses to the Na'Vi's, so they never get the rock they wanted. But it doesn't mean it's all over. The United States doesn't give up.