When the Supreme Court uses judicial review to strike down a law written by Congress, then that is an example of . A. Separation of Powers
B. Checks and Balances
C. Rule of Law
D. Popular Sovereignty

This is an example of checks and balances.

Explanation: You've got this:)!

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explanation:

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in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation: