The correct answer is C: Building New England towns and cities around a common help colonies develop a diverse economy by making it easier to trade goods. They built their settlements along the Atlantic coast to make it easier for colonist to get supplies from English trading ships, and to send raw material to Europe.
Between the 16th century and the end of the 19th century, some 12.5 millions Africans were removed from their homes and taken to the americans to be sold and perform forced labor of various kinds.