Because America was there 2nd goal the entire eastern side of the world was what they wanted to conquer first so if they dropped the bomb and japan sent there entire force at America say bye bye murica
I believe the answer is: positive externality
Positive externality refers to The benefit that enjoyed by a third party when the first and second party are conducting a transaction.
When you receive a vaccines, you prevent yourself from becoming a host that could contaminate other people from getting the virus. In the example above, you and your children are the first and second party. And other children are the third party.
Excuse me, this does not look like a HISTORY question.
