Fill in the Blanks Shared CommunicationOnline version Fill in the missing words by Zuzana Nadova 1 numeric accounting symbols signs illustration cuneiform wedge Sumerian khipu alphabets censuses numerals Shared communication is another element that all civilizations share . Shared communication may include spoken language ; ; systems ; , ideas , and ; and and representation . Shared communication allows the infrastructure necessary for technology , trade , cultural exchange , and government to be developed and shared throughout the civilization . The Inca civilization , for example , had no written script that we know of , but its complex system of allowed the government to conduct of its population and production across the vast stretch of the Andes mountains . A khipu is a recording device made of a series of strings knotted in particular patterns and colors . Written language in particular allows civilizations to record their own history and everyday events ? crucial for understanding ancient cultures . The world's oldest known written language is , which developed in Mesopotamia around 3100 BCE . The most familiar form of early Sumerian writing was called , and was made up of different collections of ( triangle ) shapes . The earliest Sumerian writing was record - keeping . Just like written records of modern civilizations , Sumerian cuneiform kept track of taxes , grocery bills , and laws for things like theft . Written language was a key part of shared communication during the Islamic Golden Age , which flourished in southern Europe , northern Africa , and western Asia from the seventh to the 13th centuries . So - called " Arabic " and the Arabic language were shared communications that allowed diverse cultures across the Arabic world to contribute the dazzling advances in mathematics , science , technology , and the arts .
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