What does the twelfth amendment require?

The approval of is the states was needed to ratify the constitution

Which of the following sets best matches the document to the people and/or ideas that influenced it? a. constitution: federalists, thomas jefferson, patrick henry b. bill of rights: george mason, thomas jefferson, james madison c. federalist papers: federalists, george washington, james madison d. letters from the federal farmer: federalists, richard henry lee, alexander hamilton select the best answer from the choices provided

What are new social classes emerged due to advancement in agriculture ?