Need done fast what were the causes and effects of the first urban civilizations?

i need it in long essay form or in points of impotent info to have

time is vary limited my class is pre AP history and Geo (10th)
ill give brainy if answered in time ill comment when im out of time

What is constantinoples government?

Imagine you are a historian studying a battlefield journal written by a soldier serving in world war i. describe the process of interpreting the information within the journal, as well as how you would determine whether the evidence in the journal is valid

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.