Which of the following is NOT a reason people have migrated internally?

(1 point)
•twenty-first century Russia: net in-migration to European areas for economic opportunity
•early twentieth-century U.S.: African-American migration to Northern cities for economic opportunity
•twenty-first century China: voluntary migration to cities for economic opportunity
• the former Soviet Union: forced migration to factories near raw materials
•twenty-first century Brazil: to the northeastern coast of the country to be near the new capital, Rio

The correct answer is:

•twenty-first century Brazil: to the northeastern coast of the country to be near the new capital, Rio.