The Louisiana, and Gadsden purchases both lead to trade across the nation. However Gadsden purchases made the U.S. capable of the transcontinental railroad. This was helpful because train transportation was the fastest way to get what we needed like mail, food, money, and etc..
No this was not a natural phenomenon
The group you are looking for is NAACP
<span>Muckrakers of the 19th century can be compared to some, but not all modern day journalists. Muckrakers were famous for "digging up dirt" on people and exposing them. Today's journalists do similar things, especially in the current political environment. However, today's journalists have it easier with the inventions of social media and the Internet. It's much easier to "dig up dirt" on people and expose them.</span>