All of the following groups benefited from immigration to the U.S. in the late 19th and early 20th century except

First and foremost, a market consists of

a. substitute goods b. complementary goods c. goods produced by the same firm d. goods produced with the same inputs e. goods that serve dissimilar purposes, which is why they are grouped

Taxes on polluting firms have

a. been tried, but not successfully. b. been successful in Germany in reducing water pollution. c. resulted in bankruptcy of the affected firms. d. never been tried to see if they work.