Answer:
To protect their freedoms and property.
Germany was expected to pay $132 billion gold marks for war damages
During WW1 and WW2, German Americans were also segregated and discriminated, but it was much worse for Japanese-Americans probably because in WW1 the Japanese were on the Allied side with America, but in WW2, the Japanese switched sides to the Central Power with Germany.
Opportunity cost is the profit lost when one alternative is selected over another. ... Opportunity cost does not necessarily involve money. It can also refer to alternative uses of time. For example, do you spend 20 hours learning a new skill, or 20 hours reading a book?
