What Colonial Boston, New York, and Philadelphia Shared

By 1750, Boston, New York, and Philadelphia were the three largest cities in British North America. Despite different origins, they shared a powerful "port city" DNA.

Common Foundations

• European Founders: Boston (Puritans, 1630), New York (Dutch, 1625 as New Amsterdam), Philadelphia (Quakers, 1682).
• Atlantic Ports: All on navigable tidewater with deepwater access—Boston Harbor, New York Harbor, Delaware River. Gateways for transatlantic trade, immigration, ideas.
• Commercial Hubs: Merchants dominated elite. Trade: fish, timber, grain, rum, slaves (NY/Philly more than Boston), manufactured imports.
• Diverse Populations: Multi-ethnic, multi-religious from day one. Boston (English + Scots-Irish + Huguenots), NY (Dutch, English, German, Jewish, African, Native), Philly (Quaker, German, Scots-Irish, African, Jewish).
• Centers of Print & Learning: First newspapers, almanacs, libraries (Library Company of Philadelphia 1731), colleges (Harvard 1636, King's College/Columbia 1754, College of Philadelphia/Penn 1749).

Key Differences

Together, they formed the Northern commercial axis that drove the independence movement—Continental Congresses met in Philly; Boston sparked the war; NY was the strategic prize.