Why do you think writing is one of history's most important cultural advances? A. it gave people the entertainment they needed to survive boring times
B. people were able to write notes to passing tribes
C. it made collecting, storing and sharing information easier and more accurate

Writing makes collecting, storing, and sharing information easier and more accurate. So answer C would be the correct answer.

Explanation:

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swahili is an extremely rich and complex civilization, a set of ethnic groups articulated by a language and a series of cultural elements that fuse the african traditions, islam and indian culture. this growth was largely a result of the indian ocean trading network that brought in not just man-made riches, but also religious ideas, specifically islam, which had a significant impact on the local culture. furthermore, the development of the swahili language gave a common cultural unity to the people.