Answer:
Rhetoric ; conviction
Explanation:
They were best known for teaching rhetoric, which is the art of public speaking and conviction.
The Sumerians invented the first writing system. People needed a way to keep track of business transactions, ownership rights, and government records as Sumerian towns grew into cities. Around 3300 BC, the Sumerians began to keep records on clay tablets with picture symbols.
Cuneiform writing was used to record a wide range of information, including temple activities, commerce, and trade. Cuneiform was also used to record stories, myths, and personal correspondence.
Cuneiform appears to have been invented by the Sumerians for the mundane purpose of keeping accounts and records of business transactions, but it eventually evolved into a full-fledged writing system used for everything from poetry and history to law codes and literature.
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No "Americans" arrived in North America. However, in 10 A.D. Vikings explored the fringes of North America. Also, Native Americans crossed over from Siberia into Alaska over a land bridge about 12,000 years ago. In 1501, Amerigo Vespucci officially discovered America but thought it was Asia so he did not dock. Then in 1592, Christopher Columbus found and docked in the Caribbean and was the first man to land on America.
