Why do you think it took so long before people started writing stuff down and keeping track of history like the Greeks?

- "bill clinton ( the 42nd u.s. president, served in office from by low unemployment, declining crime rates and a budget surplus. during clinton's second term, the u.s. economy was healthy, unemployment was low and the nation experienced a major technology boom and the rise of the internet."

it affected it because the kingdoms (with trade) slowly got richer and richer.

this link can you answer the question.