The first answer
low wages with long hours and harsh conditions
They lacked knowledge about the land and how to use their environment to survive.
According to a British army doctor, a cotton plantation should have one slave per two acres, coffee should have two slaves per three acres, and sugar plantations (the worst of the worst) should have one slave per acre
The Cold War started because of United States and Soviet Unions difference in view when it comes to Communism. US became more and more concerned with how the Soviet Union are showing their "expansive tendencies" when it comes to their dealings with Europe. The long telegram that was sent to the Department of State became the greatest foundation of the America's Cold War Policy of containment.
The Soviet Unions aggressive speeches and actions against Iran and Turkey gave way to the Truman's administration to show a stronger stance instead of a diplomatic approach that the previous administrations were doing. These factors guaranteed acceptance of Kennan's analysis that was expressed on the telegram.