In general, an economic recession refers to when a country or state is undergoing a period of slow economic growth (sometimes the growth is negative). It is less severe than a depression.
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.
African Americans in the Civil War faced many problems. They were usually treated differently and had restricted roles. This doesn't mean that they didn't fight just as bravely as the other solders. Many of them died nobly for their cause.
Sex prior to marriage, defiance, television, rock n roll, freedom, individualism
Virginia and North Carolina grew the most tobacco (it was the cash crop), while South Carolina and Georgia grew the most indigo (it was also a cash crop.)
Hope this helps!