What does this waning Northern interest in Reconstruction say about the importance of racial equality in the 1870s?

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.

it is in memorial of the independence day

the u.s. lent military supplies in exchange for bases.