Because of the crazy large population.
There are several reasons why many South Americans move from rural to urban areas, but in general many do this because there are more opportunities and higher pay in urban areas.
<span>Elements that are in the same column (group) as it.
So, some elements would be Beryllium, Barium, Magnesium, and Strontium</span>
The Arkansas River is considered a tributary of the Mississippi River because I believe it is because the Arkansas River flows into the Mississippi which then flows into the sea.
The answer would be B, because there was more opportunity outside of what was the current U.S. Also Manifest Destiny drove the people to move the desire of what they wanted and what they dream was on the outside of what they currently knew as their own.
