The power to congress include

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The most important powers include the power to tax, to borrow money, to regulate commerce and currency, to declare war, and to raise armies and maintain the navy. These powers give Congress the authority to set policy on the most basic matters of war and peace. The Constitution also grants Congress exclusively the power to appropriate funds.

To have a bunch of countries to team up, and communicate not let the communist break them apart and take over the world

Internal combustion engines