Why did plantation owners turn to enslaved africans as a labor force?

Plantation owners turned to the enslaved Africans as a labor force because they were not paying them for their work, instead they were just providing shelter and food for them. Also, they had total control over them because they owned them, thus were able to make them work as much as they wanted and the slaves couldn't do anything about it.

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.

since most of current immigration into the u.s., both legal and illegal, is coming from latin america. it would be very difficult to imagine or rationalize a country my fellow citizens are trying desperately to flee into, would pose a threat to my prosperity or freedom. since the u.s. has a long history of intervention, but no record of permanent occupation, i would not feel oppression is the main objective.  

the largest free trade nation, along with the largest gdp in the world wanting to expand it's economic policy on us, and including us, could only be positive. the u.s. government has no interest in, or way of simply forcing american culture on us. and has no track record of it. other nations that adopted american social culture, or "americanization" did so voluntarily, mainly through the choice of allowing american businesses and u.s. citizens to come into their nations, as free operatives.