In the same year, war broke out between Britain and Spain. A British military force took Portobelo and destroyed it. Panamanian historians maintain that this attack diverted Spanish trade from the trans-isthmian route. The Seville–Cádiz monopoly of colonial trade had been breached by royal decrees earlier in the century, and precedent was thus furnished for the merchants of the Latin American colonies to agitate for direct trade with Spain and for intercolonial trade. After 1740 the Pacific coast ports were permitted to trade directly via ships rounding Cape Horn, and the Portobelo "feria" was never held again.