Transatlantic Trade, 1607-1754

By the end of this lesson, students will be able to:

• Define mercantilism and explain how the Navigation Acts of 1651, 1660, 1663, and 1673 were designed to enact it across the British Empire.
• Diagram the triangular trade and identify the goods, people, and ports that moved along each leg of the Atlantic commercial system.
• Account for how salutary neglect allowed colonial merchants to evade imperial trade regulations, and identify the colonial port cities (Boston, Newport, New York, Philadelphia, Charleston) that grew rich on Atlantic commerce.
• Explain how the Indian fur and deerskin trades drew Native American nations into the Atlantic economy, and how that integration reshaped Indigenous societies (KC-2.1.III.B).
• Use Skill 5.A (Making Connections) to link Topic 2.4 to the regional economies of Topic 2.3, the slave system of Topic 2.6, and the imperial crisis of Period 3.

Transatlantic trade in Period 2 was not a single voyage between two points but a system. The CED groups the system around three claims: an Atlantic commercial network that moved goods, enslaved Africans, and the products of Indigenous labor between three continents (KC-2.1.III.A); ongoing trade with Europeans that pulled Native nations into the Atlantic economy and reshaped them (KC-2.1.III.B); and a British government that increasingly tried to organize all of this commerce around mercantilist ends, with mixed success (KC-2.2.I.C). The driving theme is WXT (Work, Exchange, and Technology), and the reasoning process the CED assigns is Causation: students are asked to account for what produced the Atlantic system and what the system produced in turn.

The first major piece is mercantilism, the early modern economic doctrine that treated wealth as a finite stock of bullion and pushed governments to maximize exports, restrict imports, and bind colonies to the home market. Under mercantilism, colonies existed to supply raw materials the mother country could not produce on its own (sugar, tobacco, rice, indigo, naval stores, furs) and to consume manufactured goods (cloth, hardware, refined metal, books) made at home. England embraced this doctrine in earnest in the second half of the seventeenth century, partly to deny the wealth of the colonies to Dutch and French rivals, and partly because Parliament under the Stuarts and the Hanoverians saw colonial commerce as a basis for naval power.

The legal scaffolding for English mercantilism was the series of Navigation Acts. The first, passed under the Commonwealth in 1651, required that goods moving between England and the colonies travel only on English-built ships staffed largely by English crews. The 1651 act was aimed squarely at Dutch carriers, who had been hauling much of the Chesapeake tobacco crop to European markets. After the Restoration, Parliament tightened and extended the policy. The 1660 act reinstated the English-shipping rule and added the doctrine of enumerated goods: a designated list of colonial commodities (tobacco, sugar, cotton, indigo, ginger, dyewoods, and later rice and naval stores) that could be exported only to England or to other English colonies. The 1663 Staple Act required that most European goods bound for the colonies first be unloaded at an English port and pay English duties. The 1673 Plantation Duty Act closed a loophole by imposing a duty on enumerated goods carried between colonies, and it placed the first customs officers in colonial ports.

The second major piece is the triangular trade, a simplified description of the way ships, goods, and people moved across the Atlantic basin once the Navigation Acts were in place. In one common pattern, New England merchants loaded vessels with rum, fish, lumber, and English manufactured goods and sailed for the West African coast. There the cargo was exchanged for captives bought from coastal African traders. The captives were carried across the Middle Passage to plantations in the British and French Caribbean and to the southern mainland colonies, where they were sold for sugar, molasses, and bills of exchange. The molasses traveled north to New England distilleries, which converted it into rum and sent the next shipment back across the Atlantic. Real Atlantic voyages were rarely so neat: most ships carried mixed cargoes between any two of the three regions, and bilateral trade between the Chesapeake or Charleston and London was at least as common as the textbook triangle. The model still captures the essential geometry of the Atlantic system: enslaved African people, and the products their labor created, sat at the center of every leg.

By the early eighteenth century, the triangular trade had built a new class of colonial merchants in the seaboard ports. Boston was the largest port in British North America for most of the seventeenth century, exporting fish, naval stores, and provisions to the West Indies and importing English manufactures in return. Newport, Rhode Island, became the most active North American slave-trading port, sending dozens of voyages a year to West Africa. New York and Philadelphia grew rapidly after 1700 on the back of the Middle colonies' grain exports to the Caribbean and southern Europe; by mid-century Philadelphia had overtaken Boston as the largest port on the mainland. Charleston, South Carolina, served as the gateway for rice, indigo, and deerskins. The merchants who ran these ports built brick countinghouses, sat on colonial assemblies, and intermarried with the planter elite. They also funded the libraries, newspapers, and printing presses that produced the eighteenth-century American Enlightenment.

The third major piece is the gap between imperial ambition and on-the-ground enforcement, what historians call salutary neglect. Through much of the early eighteenth century, the British government enforced the Navigation Acts thinly. Customs officers were few, royal governors depended on colonial assemblies for their salaries, and Parliament was preoccupied with European wars. Colonial merchants smuggled French molasses into Newport and Boston in defiance of the Molasses Act of 1733, traded directly with Spanish and Dutch ports in the Caribbean, and kept account books that recorded transactions Parliament had explicitly forbidden. Robert Walpole, who served as Britain's first prime minister from 1721 to 1742, is often associated with the policy; under his ministry, London took the practical view that loosely enforced colonies generated more revenue and more loyalty than tightly policed ones. Salutary neglect mattered less for what it allowed in the moment than for what it produced over the long run: colonial assemblies and merchant networks accustomed to operating with minimal imperial oversight, and a transatlantic commercial culture in which evasion of imperial regulation was both ordinary and broadly accepted. When Parliament reversed course after the French and Indian War, that culture would supply the political grammar of the imperial crisis (KC-2.2.I.C).

The fourth major piece is the Indian fur and deerskin trade, which integrated Native American nations into the Atlantic economy on terms the CED captures in KC-2.1.III.B. From the St. Lawrence Valley south to the southeastern piedmont, Indigenous hunters supplied beaver pelts, deerskins, and other furs that European hatters and tanners turned into finished goods bound for European consumers. The Iroquois League brokered the northern fur trade between French and English buyers and the interior nations who held the hunting grounds. The Cherokee, Creek, and Choctaw nations moved deerskins through Charleston to British markets, often in exchange for guns, gunpowder, metal tools, textiles, and rum. The Native side of the exchange was not a passive absorption of European goods. Indigenous nations selected what they wanted, played French, English, and Spanish buyers against one another, and used the proceeds to underwrite their own diplomatic and military strategies. The trade also reshaped Indigenous life from inside: hunters traveled farther, intertribal warfare over hunting territories intensified, gender roles shifted as men spent longer periods away from villages, and European-borne epidemic diseases ran ahead of the traders themselves into communities that had never seen a European face. By 1754, the integration of Native economies into the Atlantic system was deep enough that Indigenous nations were significant actors in the imperial conflict that would close the period.

Tied together, the four pieces account for what Topic 2.4 asks students to explain: how the Atlantic basin became a single, if uneven, commercial system between 1607 and 1754, and why that system is the precondition for almost every other story Unit 2 tells. The mercantilist legal scaffolding bound colonial production to the imperial market. The triangular trade hardwired enslaved African labor into the Atlantic economy. Salutary neglect produced a colonial merchant class that grew rich on commerce London never managed to fully control. And the Indian fur trade pulled Native nations into the same system on terms that would later prove fragile when imperial competition turned to open war.

The three excerpts below mark the legal scaffolding of the Atlantic system, the human cost of the Middle Passage, and the geographic shape of the trade routes themselves.

1. (Causation) Trace the causal chain that runs from English mercantilist doctrine to the Navigation Acts of 1651, 1660, 1663, and 1673. What political and economic conditions in mid-seventeenth-century England made Parliament willing to legislate the Atlantic economy in this much detail?
2. (Making Connections) The triangular trade is a model of the Atlantic economy, not a literal route. Identify two ways the model accurately captures the eighteenth-century system, and one way it distorts the historical record. What does the model gain and lose by simplifying the geography?
3. (Causation) Account for the rise of the colonial port cities (Boston, Newport, New York, Philadelphia, Charleston) between 1660 and 1750. Which combination of geography, imperial policy, and demographic change does the most explanatory work?
4. (Comparison) Compare the experience of an enslaved African aboard a Middle Passage vessel with the experience of a Native American hunter trading deerskins in Charleston. Both groups were integrated into the Atlantic economy. How were the terms of integration different, and how were they similar?
5. (Continuity and Change) Salutary neglect was an informal British policy, not a formal one. Identify one way the policy produced practical benefits for the British Empire before 1754, and one way it stored up costs that would come due after 1763.

Draft alignment — pending educator review. AP USH codes correspond to the official College Board Course and Exam Description (Effective Fall 2023, Version 1). Statements below are paraphrased in the CountryReports voice; refer to the College Board's published CED for verbatim wording.