Germany sunk it using their submarines.
Answer: The westward expansion resulted in Native Americans move to another place that they did not like.
Explanation: Native Americans was eventually forced to live on designated reservations. The expansion also had a affect on the bison (Buffalo). They would kill them so they would move out of the way of the trains
The eastern united states has a higher median age, such as florida, west virginia, and maine
- however, the western united states has a lower median age, such as utah and idaho.
I Believe The Answer Is C. The Environment