<span>because of the Germans' decision to resume the policy of unrestricted submarine warfare.
Hope this helps.</span>
Answer:
To protect their children from Americans.
Explanation:
They did not want their children to be influenced by Americans. They were not sure what Americans practiced and thought about certain topics.
Stain insisted that Roosevelt and Churchill open a second front in France just to get rid of the pressure that the German forces were giving the Soviet Union