Why did plantation owners MOST prefer to use slaves over indentured servants?
A) Slaves could be used to do more difficult jobs.
B) Slaves could be made to work their whole lives.
C) Slaves could be fed and clothed cheaply and easily.

The changes to agriculture in the united states since 1900 is that increased mechanization has increased food production, thereby increasing the need for labor. there has been an increased need for higher speeds of food production due the fact that the population in the united states continues to rise.