What did the social class with the largest number of people contribute to early civilizations? slaves worked for people in all other classes. peasant farmers grew food that fed the city. artisans produced a variety of craft goods. merchants traveled to buy and sell goods.

Peasant farmers grew food that fed the city.

Explanation:

The largest class in most early civilizations was the peasant class. These people were usually concerned with agriculture, and therefore, grew the food that fed the city. This was a very important task as communities were able to grow and develop only when surplus food was available. As agriculture became more efficient and systematic, this was increasingly easier to achieve.

it increase by 12% a year from 1812-1820

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.