The document discusses the causes and expansion of European imperialism from 1870-1914, known as the New Imperialism period. The key causes were economic needs for raw materials and new markets, political competition between European powers to gain status and prestige through colonial empires, and the influence of social ideologies like Social Darwinism. During this time, there was an unprecedented rush by European nations to colonize Africa and Asia, with around 90% of Africa being conquered by European powers in just 20 years. Britain and France competed heavily for control in Africa and Asia, while Germany and other latecomers also sought to build colonial empires.