Neo-classical economics flourished between 1870 and [[World War I]] in [[Europe]] and the [[United States]]. It focused on principles of allocation theory and price, and also "[[marginalism]]". This approach relied heavily on [[calculus]]. Modern economics builds on this work.
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'''Neo-classical economics''' flourished between 1870 and [[World War I]] in [[Europe]] and the [[United States]]. It focused on principles of allocation theory and price, and also "[[marginalism]]". This approach relied heavily on [[calculus]]. Modern economics builds on this work.