imperialism

Historiography of the British Empire

Imperialism, the Highest Stage of Capitalism 1917 book by Lenin

International relations of the Great Powers (1814–1919)

International relations, 1648–1814

List of empires

List of largest empires

Political history of the world

Scramble for Africa, in late 19th century

Analysis of Western European colonialism and colonization

14 Points esp. V and XII