Answer:
A. increased; Great Migration
Explanation:
When the migration began, 90 percent of all African-Americans were living in the South. By the time it was over, in the 1970s, 47 percent of all African-Americans were living in the North and West. A rural people had become urban, and a Southern people had spread themselves all over the nation.
Along with the stars, Kristen shall also show effect of gas, dust and solar system in the galaxy.
<u>Explanation:</u>
Galaxy is a collection of various stars but these are bound to each other in a gravitational bound system. Along with the stars, the galaxy also consists of dust, gas and other kind of dark matter.
The solar systems are also consisted in the galaxy. According to the scientists, there are one hundred billion galaxies in the universe and all the galaxies consisting of a combination of all this.
