I think it’s the plow, wheel, written languages, multiplication and division,water purification, weights and measures, But I’m not sure sooo
In what is known as The Great Migration, large numbers of African Americans moved from the rural south to northern cities, beginning in the early twentieth century. What motivated this large-scale movement?
job openings due to industrial growth in northern cities
"The promise of an easy life" was not a reason that people moved west in the late 1800s, since in fact many people knew that this new life would be quite dangerous and difficult.
