Answer: The factors that influenced growth of Christianity in East Africa are the caravans of Christians traveling through the trans-Sahara trade network and
trade with the Greeks and Romans.
It failed because it's goal was to prevent things like secession and the civil war, but eventually it didn't make everyone happy as it was supposed to so it only postponed the war for a further time, about a decade, which brought many disasters as it is known from history.
Out of the choices given, the one that is true of the Spanish American war is that the black soldiers who fought had gained experience and distinction during the Indian Wars. The correct answer is A.
