Original: When free trade was established in Cologne by the French in 1797, the success of Eau de Cologne prompted countless other businessmen to sell their own fragrances under the name of Eau de Cologne.
Simplified: When free trade was established in Cologne by the French in 1797, the success of Eau de Cologne prompted countless other businessmen to sell their own fragrances under the name of Eau de Cologne and even Farina.