List five important things done by people of early civilizations, and give its benefits to the modern society

Five important things done by people of early civilizations are the following: Ancient China, rice cultivation; Egyptians, writing; Mesopotamia, farming and laws; Aztecs, astronomy; Indus Valley civilizations, a standardized system of weights and measures.

Explanation:

The legacy of Ancient China for the world is rice cultivation which started around 6500 BCE. The Egyptians were one of the first civilizations to have an intricate system of writing; Mesopotamia was centered in the fertile crescent and taught the world different farming techniques like using a plow and provided one of the earliest examples of codified laws in the code of Hammurabi.  In the Americas the Aztecs contributed with the complex knowledge of astronomy and calendars; and the Indus Valley civilizations benefited society with a standardized system of weights and measures called the Harappan binary weight system.

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