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Popular sovereignty; also called squatter sovereignty, in U.S. history, a controversial political doctrine according to which the people of federal territories should decide for themselves whether their territories would enter the Union as free or slave states.
Limited government; A limited government has limited control over its citizens and economy, protects individual rights, and separates branches of power so that no single one can become too powerful.
Checks and Balances; The system of checks and balances is an important part of the Constitution. With checks and balances, each of the three branches of government can limit the powers of the others. ... Each branch “checks” the power of the other branches to make sure that the power is balanced between them
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