One of the most important was climate changes. As climate changed, nomads had to find new places to migrate to which led to people going to areas that were uninhabited before. Another was the development of agriculture which more or less ended the nomadic way of life when people started settling.
Answer:B
Explanation:
A more modern type of music
By utilizing the Executive 9981. In this order, it helped abolished the racial discrimination in the US. It allowed all the races to train together. In the past, the Whites and the Blacks have a different way of being admitted into the military. President Truman knew that this process was going to make it difficult to have more people in their battalion.