The great migration was the movement of some six million African Americans from rural areas of the southern states of the United States to urban areas in the Northern states between 1916 and 1970
2 years, four months and ten days.
The correct answer is " development of the atomic bomb." The Manhattan project was the code name for the development of the atomic bomb. It was a research and development project that produced the first atomic bombs for World War II and led by the United States with Canada and United Kingdom.
Answer:
oil
Explanation:
oil wells made them rich as well as gold
