Final answer:
The Congress is America's first branch of government and holds legislative powers. It is mentioned in the United States Constitution and plays a vital role in the system of checks and balances.
Step-by-step explanation:
The Congress is America's first branch of government because it is the legislative branch and is responsible for making laws. It is the first branch mentioned in the United States Constitution and serves as a crucial part of the system of checks and balances. Congress consists of two chambers: the Senate and the House of Representatives. It has the power to propose and pass bills, declare war, and oversee the activities of the executive branch.
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