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'Lend-Lease' saw the United States send military hardware, oil, and food to foreign allies during World War 2
Joseph Rainey (R-SC), born into slavery, was the first African-American elected to the House of Representatives.
The 42nd Congress voted 115-65 to establish Yellowstone, America's first national park -- despite concerns surrounding federalism
Tammy Baldwin (D-WI) became the first openly LGBT senator in 2012.