Transatlantic Trade and Mercantilism

Mercantilism was the economic theory behind every empire's colonial policy: the world's wealth was fixed, measured in gold and silver, so one nation gained only if another lost. Colonies existed to serve the mother country, supplying raw materials and buying back finished goods, never competing with it. England turned this theory into law with the Navigation Acts, starting in 1651. The acts required that certain valuable goods, called enumerated goods, like tobacco and sugar, travel only on English or colonial ships and pass through an English port before being sold anywhere else in Europe. That detour let England tax the goods and let English merchants take a cut, keeping the profit inside the empire instead of handing it to the Dutch or French.

The triangular trade is the classroom shorthand for how goods moved: English manufactured goods to West Africa, enslaved people from West Africa to the colonies and Caribbean, raw materials like sugar and tobacco back to England. But real ships rarely ran that clean three-leg loop. Merchants ran shorter routes, swapped cargoes at multiple ports, and the Middle Passage overlapped with dozens of separate voyages carrying rum, fish, and lumber in different directions. The triangle is a useful map, not a shipping schedule.

For decades England enforced the Navigation Acts loosely, a stretch historians call salutary neglect. Customs officials were few, bribery was easy, and colonial merchants smuggled freely with French and Dutch islands. That freedom let colonial trade networks and self-government grow strong, setting up the shock when Britain tightened enforcement after 1763 and colonists felt a right taken away.