Broadly speaking, you are right. "I want your land" can be interpreted as meaning "I don't have enough land" and need Lebensraum. The Spanish conquest of the A

Broadly speaking, you are right. "I want your land" can be interpreted as meaning "I don't have enough land" and need Lebensraum. The Spanish conquest of the Aztec Empire could be interpreted as Spain not having enough gold, land, and people. The US invasions of Panama and Grenada could be interpreted as due to a lack of pro-Americans in power in nearby countries. The Norse fights with the Dorset and Thule "skraelings" could be interpreted as due to a lack of desired cultural homogeneity. But it's hard to make sense of anything at that level of generality. To push it a notch higher, I could say that wars are due to specific arrangements of atoms. I would be absolutely correct, but it wouldn't be helpful.