It was a chain reaction. Long story short, the countries were pulled into the war because of agreements they had with their allies. This treaty is what caused the countries to enter WWI, to protect and defend their allied countries who were already in the war.
Answer: William Henry Seward wanted to add to the amount of land that the United States owned.
Question:
Between the gold rush and the civil war. Americans in growing number were filling what states?
Answer:
Mississippi River Valley, Texas, the southwest territories, and the new states of Kansas and Nebraska.
