I'm not sure if any of your answers are correct answers to the question asked.
Cities were mostly developed on the Atlantic coast as 1. that is where they landed and 2. they would have port access to Europe still.
As time went on, the British government did limit the growth westward.
Answer:
The Battles of Lexington and Concord, fought on April 19, 1775, kicked off the American Revolutionary War. On the night of April 18, 1775, hundreds of British troops marched from Boston to nearby Concord in order to seize an arms cache.