The correct answer is - C. 1975 - 1999.
The period between 1975 and 1999 was a period in which the world population grew for around 2 billion people. Even thought that is the same rise as in the period between 1930 and 1975, still this period is shorter, and is just 24 years the world population grew from approximately 4 billion people to approximately 6 billion people.
The North and the South disagreed heavily on the topic of slavery. The North wanted it destroyed, but the South wanted it to spread. As time passed the tension built. One of the tipping points was when John Brown tried to start a revolution by stealing guns for the slaves from a weapons depot in the South. He was caught before anyone was hurt and sentenced to hang. The North call him a martyr, which enraged the South, since he had been planning to hurt and kill them.
Answer:
A. The Manual for Courts-Martial
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