Answer:
The poisoned substance was mixed with arsenic-free zinc and sulfuric acid, resulting in arsine gas.
The gas was later ignited and decomposed into pure metallic arsenic. This test was highly sensitive and could detect even one-fiftieth of a milligram of arsenic. It was a remarkable discovery, since before that, arsenic was widely used as poison in enormous amounts of murders, impossible to detect and trace.
Answer = constitutional monarchy.
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Answer:
Benjamin "Pap" Singleton (1809 – February 17, 1900) was an American activist and businessman best known for his role in establishing African American settlements in Kansas. ... He became a noted abolitionist, community leader, and spokesman for African-American civil rights.
Explanation:
Benjamin "Pap" Singleton (1809 – February 17, 1900) was an American activist and businessman best known for his role in establishing African American settlements in Kansas. A former slave from Tennessee who escaped to freedom in Ontario, Canada. He became a noted abolitionist, community leader, and spokesman for the community.
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Answer:
The United States and it's government changed in the late 1700s and early 1800s was slavery of people in the North and South. The North was industrialized by getting industries and factories and urban areas. ... Stated that through slavery would continue in the South, it would be banned in the territory won from Mexico.
Answer:
Explanation:
A. African Americans gained the right to own property