Answer:
Louisiana Purchase, Texas Annexation, the Mexican Cession, the Erie Canal, the Homestead Act, the transcontinental railroad and the California Gold Rush are some examples of how the US started expanding its territory in the 1800s.
Explanation:
Automobile changed the lives of Americans by; roads being more suitable, the automobile liberated rural families and new jobs, and fast travel.
That would be D
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1. The Korean War is often referred to as the the Forgotten War.
2. Nearly 5 million people died.
3. causes of the Korean War, were generally: the spread of communism during the Cold War, American containment, and Japanese occupation of Korea during World War II.
