In the late 1200s, Venetian explorer Marco Polo traveled the Silk Road to visit China. How did his journey influence the history of Europe? A. It made Polo the first European to visit China. B. It led to the first European imports of silk from China. C. It inspired Europeans to learn about the language and religious beliefs of China. D. It became the basis for a book that introduced Europeans to the customs of China.

The chart shows the marginal cost and marginal revenue of producing apple pies. what most likely will happen if the pie maker continues to make additional pies? the marginal costs will continue to rise, increasing the total cost, while the marginal revenue remains the same, decreasing the profit. the marginal costs will continue to fall, decreasing the total cost, while the marginal revenue remains the same, increasing the profit. the marginal costs will continue to rise, increasing the total cost, while the marginal revenue remains the same, increasing the profit. the marginal costs will continue to fall, decreasing the total cost, while the marginal revenue remains the same, decreasing the profit.

Whether or not a given study has the possibility of causing harm to participants:

How has the elimination of trade barriers affected the movement of goods among member countries of the european union? a. member countries are able to produce all the goods they need. b. goods can move freely among member countries. c. member countries no longer need to trade with countries outside the eu. d. larger countries are able to import more goods than smaller ones.