The Lewis And Clark Expedition's goal was the explore the new land to the west. One of there other goals was the find a waterway that stretched from the east side of the US to the other side, also known as Sea to Shining Sea.
That his boss was a communist
In 884, Charles the Fat reunited all the Carolingian kingdoms for the last time, but he died in 888 and the empire immediately split up.
The Native Americans
Hope this helps