Explain the four principles on which the constitution is founded. how does the constitution incorporate these principles into a plan for the government? how do you see these principles at work in government today?

4 principles:
Checks and balances (each branch of government has the power to limit the actions of the other two.)
separation of powers (The government's power is divided among three branches: the legislative, the executive, and the judicial branches)
limited government (The government has only the powers that the Constitution gives it.)
popular sovereignty (the people are the only source of governments's power)
popular sovereignty- allows us to elect who we want to represent us
separation of powers- prevents abuse of power and safeguards our freedom
checks and balances- no one branch can become so powerful in a democracy as to destroy this system.
limited government- These laws create boundaries beyond which the government is not allowed to go and powers delegated to it are the only powers it has.
hope it helps

It covered the territory of land across eurasia from northeastern europe to the pacific ocean.