I seriously recommend you to read about imperialism. Imperialist nations (i.e. late stage capitalistic, industrialized nations, with sufficient accumulation of capital and sufficient development of monopolies, trusts and cartels, to the point of the most profitable action being the export of capital to other, poorer nations, with or without the consent of the locals), clash with each other in these attempts to expand their sphere of influence. This happened in WW1, WW2, and we're seeing it again with the Russian-NATO conflict which led to the Ukraine invasion.