What did the Navajo call their homeland

b. ensure mutual protection from communism.

.

on my last question

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.

a big one is

to appoint and regulate officers of the land and naval forces,

which caused much controversy ending the articles