Describe a test made just for you that would allow you to succeed brilliantly. What have you done in your life that prepares you for that test?

Ibelieve that the answer is (a).

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.