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 Omigration 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