Why are British North American colonies on the west coast of the Atlantic Ocean?

Because the east coast is close to the Atlantic Ocean, British colonists crossed the Atlantic Ocean from Britain and landed on the east coast of North America to establish colonies. At that time, the route from the Atlantic Ocean to the Pacific Ocean via strait of magellan and then to the west coast of North America had not been explored.

British colonies in North America, 1607 ~ 1775, 13 British colonies were established in the narrow strip from the Atlantic coast in the east of North America to the Appalachian Mountains in the west. They are Virginia, Massachusetts, Connecticut, Rhode Island, New York, New Jersey, Delaware, New Hampshire, Pennsylvania, Maryland, North Carolina, South Carolina and Georgia. It belongs to Britain, but it is relatively independent and autonomous. It is chartered by the British king and gives political autonomy, but it does not occupy parliamentary seats. Between 1607- 1732, there are 16. Due to the merger, there are only 13, which is the first 13 state in the United States.

1606, London Virginia Company organized the first batch of immigrants to move to North America; 1607 In May, a colony was established at the mouth of the James River and named Jamestown. History calls this action the beginning of Britain's establishment of North American colonies.