<span>They can all team up to have a chance at fighting the "white settlers" or Americans.</span>
Correct answer: D. To help former slaves make the change to freedom
Details:
The Freedmen's Bureau was established by Congress in 1865, in the aftermath of the Civil War. The aim of the Bureau was to provide assistance to former black slaves (as well as poor whites) in the South during the Reconstruction period. The Freedmen’s Bureau provided food and housing, established schools, and made medical and legal assistance available. There was an intention of settling former slaves on land confiscated or abandoned during the war, but that didn't materialize. Radical Republicans took over dominance in Congress and they determined that confiscated lands in the South should be returned to their original owners.
The Mandate of Heaven (or Tian Ming) is a political doctrine that the Zhou Dinasty implemented to justify the rule of the Emperor of China. The main idea was that there should only be one ruler of the country and he was on charge with the approval of the gods as the "<em>Son of Heaven</em>". If the ruler was unfair or didn't serve his people well, he could lose the Blessing of the gods and was consider to be bound to be removed from power (The cases in which the King was overthrown, or the people suffered any kind of natural disaster or famine were considered signs that the gods have removed the Mandate of Heaven).