Final answer:
Alfred stood up to Major because of false accusations and the actions of abolitionists. The result of their confrontation is unclear.
Step-by-step explanation:
Alfred stood up to Major because Major accused him of breaking faith and blamed him for the actions of the abolitionists. Alfred's refusal to take the blame and his assertion that the goods were not the Major's resulted in a confrontation between the two characters. The result of this confrontation is not mentioned in the given information, so it is unclear what happened afterward.