What is market power?
a: the ability of a company to change prices and output like a monopolist
b: factors that cause a producer’s average cost per unit to fall as output rises
c: division of customers into groups based on how much they will pay for a good
d: the right to sell a good or service within an exclusive market

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.

d. both had been uninhabited before settlers arrived.

i think economic depression and disrupted trade and commerce