The movement of settlement houses aimed at enabling immigrant families access to credit, enhancing their application in the construction of a house with conditions worthy of comfort and shelter for the family, allowing greater involvement of beneficiaries with democratic participation and a better quality of life.
You haven't given a list of options but ill list off some reasons, #1 The U.S explained that they thought Japan wanted world domination just like Hitler before he died, #2 too save American Lives, #3 Revenge for pearl Harbor