<span>After WWII Russia kept all the territory it had covered and became the USSR, These countries were not given a fair choice in the matter. When countries like Czechoslovakia and Hungary wanted their freedom the USSR reacted swiftly and very hard with soldiers and tanks to wipe out the opposition. Once the USSR collapsed these countries were own their own, for better or worse. Unfortunately old prejudices and hate came out with violent results. If this happened under USSR control they would have crushed the squabbling.</span>
Almost all humans to a certain extent are dissatisfied with the limited availability of resources, but if you're speaking from an academic point of view, it would be Economists, since they study choices made from this limited availability.
Native Americans lived freely in the lands. It belonged to the tribes and not to individuals and anyone could use its wealth as long as it wasn't exploitation or destructive. They practiced their cultural beliefs and didn't think that there should be a reason for them to move out of the land.
The Settlers were capitalists so they wanted the land to use it for agriculture and hunting and things like that and to sell it and buy it individually as personal property. They also believed that the Natives were savages and that their beliefs were blasphemous and that they had no claim to the land at all.<span />
Put this in the math section.