Washingtonians supported the war effort at home by

Explanation:

Washingtonians supported the war effort at home by

rationing goods and buying bonds.

collecting goods and selling bonds.

housing soldiers and spying on immigrants.  

rationing goods and working on farms.

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.

4 is the oni could think of