Which one of the following events led to the Constitutional Convention and the
revisions of the Articles of Confederation?
a. The signing of the Declaration of Independence
b. Shay's Rebellion
c. The Supreme Court case of Marbury v. Madison
d. the French and Indian War

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.