The Role of Racism in the Decolization of the World

In the late 20th century all the major empires fragmented and became new independent nation states. Why is that? Well you know I kind of delve into some of the cases in the bookYou know why did Portugal decolonize Angola well it was right after it failed to colonize it.Why did Australia colonize Papua New Guinea was right after It failed to get white people to move there. America and the Philippines Southern Philippines likewise France and Algeria. So essentially following the failure of colonization states basically have forced with the fact that they have this territory in the frontier that is populated by indigenous group. As states develop they lose the power to simply displace unwanted populations so they have to grapple with the