Which of the following is not a development that has expanded world trade?

a. higher transport costs

b. increased competition in international commerce

c. changing nature of production

d. multilateral trade agreements

The answer is A because the higher the cause the more reluctant countries will be to trade with overseas countries and thus less world trade

when the chinese communist party took power in 1949, it began to build new di and levees to hold the yellow and yangtze rivers back.

nope native american were.

native pride