Read the excerpt from It's Our World, Too!: Young People Who Are Making a Difference. In his small Idaho school, football meant everything to Ernesto ("Neto”) Villareal, sixteen, the team’s star running back. And yet when he heard fans screaming racial insults at him and his Hispanic-American teammates, he wondered how he could keep playing for fans who felt that way. The insults also bothered Andy Percifield, a white student leader. When Neto and Andy teamed up, each using his own special power, fans began to feel heat they had never felt before.
The details of this excerpt reveal the author’s purpose by

A. explaining why the fans acted like they did.
B. including facts and details about the topic.
C. encouraging the reader to believe in something.
D. expressing opinions about a topic.

Identify the trade regulation concept described in each scenario. protectionism free trade trade war country a and country b want to develop their respective export markets. both countries have highly developed agricultural, industrial, and service sectors. the countries decide to initially lower trade barriers and eventually remove them completely. arrowright country a has an agrarian economy with an emerging industrial sector. to allow domestic industries to grow, country a applies quotas on all industrial products except those that are used as resources. arrowright country a passes an economic policy that will indirectly give its own companies an advantage over country b’s companies. country b alleges that the policy violates the countries’ trade agreement and imposes retaliatory tariffs. arrowright