fifty thousandtwenty thousandthirty thousandforty thousandHow large do scholars estimate the population of the city of Uruk may have been by the end of the fourth millennium BCE?Elon.io is an online learning platformWe have an entire course teaching World History 1 grammar and vocabulary.Start learning World History 1 nowYour questions are stored by us to improve Elon.ioYou've reached your AI usage limitSign up to increase your limit.