This is also known as the Prime Meridian.
Philadelphia was great for trading and factories because <u>it was on a river,</u> located along the Delaware River and Schuylkill River, in the greater Delaware Valley.
People here in Philadelphia traded lumber, coal, furs, textiles, and bricks.
Philadelphia was a trade center for the colonies that based an important part of its economy on trade with the advantage that was located next to the river and had ports.
Answer:
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A strong sense of attachment or belonging to one's own country