This is my first time posting here, and I know specificity is important, so if the question is too vague, here is a more specific one.
What is the first piece of writing to reference a past human event?
Thucydides is sometimes regarded as a father of history due to his matter-of-fact reporting, disinterested style and refusal to attribute events to the will of the gods. You might be interested in his "History of the Peloponnesian War."