Planks are parts of the party platform in the form of issues that are presented to the people. civil rights, taxes, and energy are a few examples of the issues.
a. true
b. false

Yes, this is true.
I would perhaps also add the specification that planks are usually presented with an opinion or a view: so not only in the form of "there are such and such taxes" but rather in the form of "we think the taxes should be in the following form..."

Supreme court ! hbdbsbbs

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.