* Natural harbor: New York City's natural harbor was a major factor in its development as a port city. The harbor is large and deep, and it is protected from the Atlantic Ocean by a series of islands. This made it an ideal place for ships to dock and unload their goods.
* Hudson River: The Hudson River was also a major factor in the development of New York City. The river provided a direct route to the interior of the country, and it was used by both passenger and commercial vessels.
* Erie Canal: The Erie Canal, which opened in 1825, further boosted New York City's economy. The canal connected the Hudson River to the Great Lakes, and it made it much easier for goods to be transported between the East Coast and the Midwest.
Philadelphia
* Delaware River: Philadelphia is located on the Delaware River, which was a major transportation route in the 18th and 19th centuries. The river provided access to the Atlantic Ocean and the interior of the country.
* Fall Line: Philadelphia is also located at the Fall Line, where the Piedmont Plateau meets the Atlantic Coastal Plain. This made it a good place to build a city because it provided access to both water and land transportation.
* Natural resources: The Philadelphia area has a number of natural resources, including forests, minerals, and water power. These resources helped to support the city's economy.
In conclusion, the geography of New York City and Philadelphia played a major role in the development of both cities. Their natural harbors, rivers, and location on the Fall Line all contributed to their success as major commercial centers.
