How did humanitarians aid in the building of empires?

How did humanitarians aid in the building of empires?
 
  A) Humanitarians felt the need to go on civilizing missions to less fortunate countries, thus aiding the conquest efforts to lead the human race toward progress.
  B) Humanitarians felt the need to go along on conquest missions to make sure the natives were cared for.
  C) Humanitarians of all kinds wanted to advance progress by bringing technology to the less fortunate.
  D) Christian missionaries were the self proclaimed humanitarians that accompanied conquerors, thus helping subjugate.
  E) Humanitarians did not help the conquest efforts.