Answer: by granting the Huguenots control of four 'fortified towns': La Rochelle, Cognac, Montauban and La Charité for two years. Moreover, Protestants were henceforth to be allowed to hold public office in France, and Catherine de' Medici, mother of Charles IX, promised to give her daughter Marguerite de Valois in marriage with Henry of Navarre.
The treaty provoked the fury of the uncompromising Catholics and tensions between the two remained high, as evidenced by the 1571 Rouen incident where some forty Protestants were massacred after refusing to kneel for Communion. A year later, the St. Bartholomew's Day massacre led to the resumption of hostilities.
Explanation: found on wiki not sure if it answered your question or not. but hopefully it did :)
