Explanation:
President Benjamin Harrison
I am not 100% sure but I believe the answer is A
The correct answer is France
When the French revolution happened, most of the Nobility that hadn't escaped was executed, and all things relating to the Church were forbidden. Even the calendar was changed because the names of months were related to Christian things. It influenced numerous political revolutions, Haiti just being one of the country that started a revolution.
The correct answer is B) No historians have written about the era that preceded the ancient era.
The option that could be a reason why humans know very little about the time before the ancient era is that no historians have written about the era that preceded the ancient era.
We are referring to what is cold prehistory, the time where events occurred before the existence of written records. Historians write what they can research or interpret written records from the past such as the clay tablets of Sumer-Mesopotamia or the Egyptians glyphs due to the Rosetta Stone. But without written records, all is speculation, that is why humans know so little about prehistory.