Answer:
Muslim alchemists were also the first to develop theories on the transmutation of metals, the philosopher's stone, and the artificial creation of life in the laboratory, though these alchemical theories were later rejected by practical Muslim chemists from the 9th century onwards.
Explanation:
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The answer to this would be immigrants, think of the industrial revolution when trains were made as a new transportation. Asians were the ones who risked their lives build the tracks across the country
B if you had multiple choice answers...
The correct answer is option b. "by passing a law assisting slaves in gaining their freedom in the north". The Congress was trying to regulate the buying and selling of slaves, when the Missouri Compromise was stated in 1820. This bill prohibited slavery north of the southern boundary of Missouri, which assisted slaves to pursue their fight for freedom.
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