The main reason why rice became a Chinese staple food during the Tang dynasty was because it was so plentiful and had all the basic nutrients that were needed for survival.
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Explanation:
Answer:
Explanation:
1. Louisiana Purchase by Thomas Jefferson-opened a large territory for the U.S.
2.The Missouri Compromise by Henry Clay which divided the U.S. into free and slave states
3. The Kansas Nebraska Act created by Stephen A. Douglas which allowed the states to decide if they want to be free or slave states(AKA: popular sovereignty)
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It is where the ozone layer is located and it protects from harmful gamma rays and the sun from making the Earth too hot
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