Whats the principle of the bill of right?

On september 25, 1789, congress transmitted to the state legislatures twelve proposed amendments to the constitution. numbers three through twelve were adopted by the states to become the united states (u.s.) bill of rights, effective december 15, 1791. james madison proposed the u.s. bill of rights.

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.