to implement these ideals, the US has built its government on four element :
1. popular sovereignty, meaning that the people are the ultimate source of the government's authority
2. representative government where people in government are all elected by the people
3.check and balances where the congress, the supreme Court and the president all have power, but each of them limits or or balances the power of the others. this mean the President can never become the dictator
4. federalism, where power are shared by states and national government