Both philadelphia and new amsterdam were port cities.
a. true
b. false

The answer is letter A, True, both Philadelphia and New Amsterdam were both port cities. Philadelphia port consists of a series of marine terminals, approximately 112-acre of marine terminal. New Amsterdam or now called New York marine terminal is approximately 40km radius. it includes the system of navigable waterways in the estuary along 1050km of shoreline.

A)30b)29c)28d)31hope this .