Imperialism, the Highest Stage of Capitalism by Vladimir Lenin, describes the function of financial capital in generating profits from imperialist colonialism as the final stage of capitalist development to ensure greater profits. The essay is a synthesis of Lenin's modifications and developments of economic theories that Karl Marx formulated in Das Kapital (1867). Lenin's influential analysis remains highly relevant in comprehending the historical context of the foreign and domestic policy in the United States and other major nations.