History
Before European arrival the Lenape lived around the Delaware and lower Hudson rivers, the Susquehannock along the Susquehanna, and the Haudenosaunee Confederacy — Mohawk, Oneida, Onondaga, Cayuga and Seneca — held most of upstate New York. The Dutch founded New Amsterdam on Manhattan in the 1620s, and Swedes settled on the Delaware; England seized New Netherland in 1664 and renamed it New York. Maryland was founded in 1634 as a refuge for English Catholics, and the Quaker William Penn laid out Philadelphia in 1682.
Philadelphia was the political centre of the Revolution: the Declaration of Independence was adopted there in 1776 and the Constitution drafted there in 1787. George Washington was inaugurated in New York in 1789, and the capital moved to the new federal district on the Potomac in 1800. British troops burned Washington in 1814, and the defence of Fort McHenry in Baltimore inspired the national anthem.
The Erie Canal, opened in 1825, made New York the country's commercial capital. Maryland stayed in the Union during the Civil War though slavery was legal there, and Harriet Tubman escaped from its Eastern Shore to guide others north. The battles of Antietam in 1862 and Gettysburg in 1863 were fought here. Millions of immigrants passed through Ellis Island from 1892, while Pittsburgh's steel mills and Philadelphia's factories drew workers from Europe and Black migrants from the South. The 1963 March on Washington, the Stonewall uprising of 1969 in New York and the attacks of 11 September 2001 on the World Trade Center and near Shanksville, Pennsylvania are among the region's modern landmarks.
