Answer
The Rocket Technology
Explanation
Konstantin Tsiolkovsky was the Father of Modern Astronautics who in 1898 first proposed the idea of space exploration by rocket. In his first report he suggested the use of liquid propellants for rockets in order to attain a higher range. Early in the 20th century, Robert H. Goddard an American published a pamphlet attaining higher altitudes in rockets with a mathematical model called the meteorological sounding rocket.
Answer:
the answer is B
"Petit Gulf cotton was a cotton hybrid patented by planter Rush Nutt at his Laurel Hill Plantation in Rodney, Mississippi, in 1833. It was named "Petit Gulf" for the bend of the Mississippi River where it was grown."
<3
Ummm what kind of slaves?