Original: As a result of the Treaty of Campo Formio in 1797, the Fricktal became a French protectorate, forming the front line between the French Revolutionary and the Austrian troops in the War of the Second Coalition.
Simplified: Because of the Treaty of Campo Formio in 1797, the Fricktal became a protectorate of the French, making the front line between the French Revolutionary and the Austrian troops in the War of the Second Coalition.