Which one of the british colonies established in north america in the 1600s was the most important and why

The Thirteen Colonies were a group of British colonies on the east coast of North America, founded in the 17th and 18th centuries that declared their independence in 1776 and formed the United States. They were (from north to south)

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.