To cut ties with the Native American culture and adapt to the American culture.
People believe its what sparked WWI. The story is actually very funny. Six assassins tried, one chichekend out, the other threw a granade, which bounced off the car and so he took an expired cynide pill and jumped intot he river. it was 6 inches deep, so he went to jail, and one was hungry, so he was ordering a sandwich, and Franz took a wrong turn, and so the assassin killed him. the rest of the assassins just gave up and went home. And thats the start of WWI
Answer is D.
Germany out of those 4 countries had the most dramatic territorial changes during that time period.
For anyone looking in the future, the answer is true.
How is this a history question-