How do the terms pluralistic and consensus both apply to american society?

The term pluralistic soicety is used if there is more than one group of people exist within a society, and the term consensus is used if all members in the society acted based on pre-determined agreement on what is acceptable and what is not

American society is pluralistic-because there are groups consisting of different cultures and ethnicity in the group.
And it considered as consensus because we acted based on laws that made through democratic process.

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.