C: disease would kill ideas before they even spread
Answer: Mary Ellen Pleasant (August 19, 1814 – January 11, 1904) was a 19th-century entrepreneur, financier, real estate magnate and abolitionist. She was arguably the first African-American self-made millionaire, preceding Madam C. J. Walker by decades. She identified herself as "a capitalist by profession" in the 1890 United States census.
Explanation:
Differences between a physical and chemical change in matter or substances. A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.
