Answer: Global change as a result of war.
Explanation:
In addition to the destruction of biblical proportions, sacrifices, and material damage, World War I brought with it changes globally. As a large number of men were mobilized into the war, women have replaced their role in the industry. This contributed to the emancipation of women.
There was also a sharp rise in nationalism in the world, as well as the birth of communism. There was also a new world order after the peace in Versailles. America has begun to grow into the most significant power in the world. The worst was Germany.
They must enlist for the U.S. Military.
