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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Absolutely true! With the invention of steam power, a new source of energy was formed, and in return paved the way for more machinery to be built using this power.
Abraham Lincoln is my answer
The Gibbons v. Ogden court case in a nutshell:
Ogden had a monopoly on operating steamboats on the Lower Mississippi.
Gibbons, who had a federal liscence to operate steamboats, tried to start business there and was sued by Ogden.
The ruling was that Gibbons would be allowed to operate there, which gave precedent to federal law over state law.