<span>Cesar Chavez by reading excerpts from "lessons of Dr. Martin Luther King, Jr." wanted people to make a change in the society for the upliftment and betterment of farm workers so that they can have better living, better health facilities, better financial help from government and their civil rights be protected. Cesar Chavez was aware of the hardships faced by farm workers so he wanted a change in the society to improve treatment facilities, better pay and better working conditions for farm workers.</span>
This is referred to as the agricultural revolution - option d. It allowed the people to plant their own food (rather than collect) and gave them more security in life. (they could plan ahead and collect food for later).
The primary reason why the Articles o Confederation were adopted were because states were very much independent and didn't want a central power controlling them. This became unsustainable however when it came time to pay back war debts. Then came the Constitution.
He is known for founding the Democratic Party and for his support of individual liberty.