The united states gained islands in the Eastern Samoan Islands.
The correct answer here is B - although there were a lot of reforms
around this time (6 to be specific - Womens' Rights, Education,
Transportation, Abolitionist movement, Prisons, and Utopian
communities), public safety, food purity and elections were not included
in these. Therefore the answer is B - Education reform.
The Reformation (or more specifically the Protestant Reformation) led to A. "the division of Christianity into Catholic and Protestant faiths." This was brought about by Martin Luther.