Which of the following could be placed in the area labeled D? Its members can write tax laws.
Its leader can be elected for no more than two terms.
There are nine members of this branch.
This branch is made up of two houses.

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.