The United States has a very good government system

The United States has a very good government system.But how did they archive this goal without tyranny? The United States constitution, it was written in 1787 in Philadelphia and it tells how the government is going to work. Besides giving the people an abundance of rights and freedom, it protected the people from another tyranny. The constitution guarded against tyranny in several ways which were by federalism, separation of power and checks and balances.
Federalism makes sure no one group of people has all the power. In document A it says since there are two governments “double security arises to the rights of the people.” Both central and state government has the right to tax and enforce laws. The government will make sure all is divided and will control each other, but still be a separate government. Federalism protects against tyranny because the state and national governments have power so no one will become too powerful.