Answer:
Pull factors are the positive attribute possess by new territory that make us wants to move there. Push factors are the negative attributes that we have in the territory where we lived in that make us want to get out.
In the early decades of the twentieth centuries, Many African Americans move from the south to northern states because of the following factors:
Push factors
- Massive discrimination that they face in the south. Many of the people there still held resentment and racisms toward the African Americans and treated them badly.
- Their economy are stuck only on agriculture. There are not many job opportunistic to accommodate all African Americans there.
Pull factors:
- More job opportunities in the north due to early adoption of industrial revolution.
- Better treatment toward minorities.
- More Government in the north have African American as their representatives.
Trees require more moisture because unlike other plants they must have way for transporting mineral nutrient as relatively great distant from their roots to their leaves.
B, because this is answer has nothing to do with American music.
