Modern day finance can trace its way to Italian mathematician Fibonacci (1170-1250). Why?

Answer: He popularized the Hindu–Arabic numeral system in the Western World, primarily through his composition in 1202 of Liber Abaci (“Book of Calculation”). By the fifteenth century, this replaced the use of roman numerals across Europe.

Source: The Ascent of Money – A Financial History of the World by Niall Ferguson

More at: History

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