Us war bonds the war effort by
raising money for people on the home front.
loaning money to the government.
paying taxes to the government
banks stay in business,

Raising money for people on the home front

Explanation:

That was the appeal of war bonds. They helped the soldiers

i believe that the answer to the question provided above is that  establishing smaller ethnic communities within larger communities  gives more chance for people to know each other more but this might lead to the  conflict between groups.