Which of the Following Was an Effect of World War

Which of the following was an effect of World War I?

A) The old empires of Europe continued to thrive.
B) Most Germans and Austrians felt they were victims of a harsh peace.
C) Russia embraced its western European allies for decades to come.
D) The United States grew less powerful due to the strain of the war on its economy.
E) Europe, once again, confirmed its self-image as the admired center of Western culture.