Answer:
I'd say the telegraph.
Explanation:
Developed in the 1830s and 1840s by Samuel Morse (1791-1872) and other inventors, the telegraph revolutionized long-distance communication.
Aristotle (Greek philosopher)
-Plato's most famous student
-analyzed all forms of government
-wrote Politics- Rule of Law, even rulers must be subjected to the law
-hated tyranny
-ideas used the most today
Around 340 years after
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