Answer:
D. Manifest Destiny.
Explanation:
The idea that the U.S. was meant to expand into new territories was known as Manifest Destiny.
This was very important during Westward Expansion and at the end of the 1800s, many Americans thought the U.S. should continue to expand, even overseas.
The answer is C, because the English speakers misunderstood what was meant by "deutsch"
Czechsolvakia, Poland, the Kingdom of Yugoslavia, Albania, Turkey, Saudi Arabia, Estonia, Latvia, Lithuania and Finland were created after WWI when the Treaty of Versailles was signed.