Early Modern Globalisation: Oceans, Slavery, Colonialism, and Revolution, 1500-1900

The period from roughly 1500 to 1900 saw the creation, for the first time in human history, of a genuinely global economic and political system, driven initially by European maritime expansion but sustaining itself through the forced integration of Africa, the Americas, and Asia into interlinked circuits of production, trade, and coercion. Portuguese and Spanish voyages from the 1490s, followed by Dutch, English, and French expansion, connected the Atlantic and Pacific worlds to established Indian Ocean and Asian trade networks that had existed for centuries, but did so increasingly through naval violence and monopoly companies rather than negotiated commercial access.

The Atlantic slave trade forcibly transported an estimated twelve to thirteen million enslaved Africans to the Americas between the sixteenth and nineteenth centuries, sustaining plantation economies producing sugar, tobacco, and cotton for European markets; the 'triangular trade' linked European manufactured goods, African captives, and American commodities into a single profit-generating circuit whose scale and brutality — documented in slave-ship records, plantation account books, and survivor narratives such as Olaudah Equiano's — make it one of the largest forced migrations in world history and a foundational element of the modern capitalist world economy, as Eric Williams controversially but influentially argued in Capitalism and Slavery.

In Asia, European trading companies, above all the Dutch and English East India Companies, moved from negotiated commercial factories to direct territorial control, most consequentially in India, where the English East India Company's victory at Plassey (1757) initiated a process of conquest and revenue extraction that transformed Bengal's economy and, according to historians like Sugata Bose and William Dalrymple, contributed materially to Britain's industrial take-off through resource transfer often termed the 'drain of wealth' by Indian nationalist economists like Dadabhai Naoroji. Comparable processes of company-state colonialism, extraction of cash crops, and forced labour regimes (such as the Dutch cultuurstelsel in Java) unfolded across maritime Asia.

The late eighteenth and nineteenth centuries also produced a wave of political revolutions whose ideas circulated globally: the American Revolution (1776), the French Revolution (1789) with its Declaration of the Rights of Man, and crucially the Haitian Revolution (1791-1804), the only successful large-scale slave revolt to establish an independent state, which directly challenged Enlightenment universalism's frequent silence on race and slavery and profoundly unsettled slaveholding powers across the Atlantic world, as C.L.R. James documented in The Black Jacobins. These revolutionary ideas of popular sovereignty and rights, transmitted through print culture and returning soldiers and sailors, fed into later nineteenth and twentieth-century anti-colonial movements across Asia and Africa, including India's own constitutional and nationalist thought.

By the nineteenth century, industrialisation in Britain and Europe, financed partly by colonial extraction and slave-trade profits, produced a new phase of 'new imperialism': the Scramble for Africa formalised at the Berlin Conference (1884-85), and the consolidation of formal colonial rule over most of Asia and Africa by 1900, embedding a global division of labour in which colonised regions supplied raw materials and captive markets while metropolitan Europe industrialised — a structural relationship that world-systems theorists like Immanuel Wallerstein describe as a persistent core-periphery hierarchy that shaped twentieth-century development trajectories, including India's.