Marginal costs. Keep in mind that marginal means on the edge of something, so the cost of producing one more unit would be on the edge. Hope this explanation helps.
Answer:
Jamestown offered anchorage and a good defensive position. Warm climate and fertile soil allowed large plantations to prosper. Plymouth provided good anchorage and an excellent harbor. Cold climate and thin, rocky soil limited farm size.
Hope this helps :D
Congress. It consists of 2 chambers, The Senate (made up of Senators), and The House of Representatives
They are direct and representative.
Hope this helps :)
