The Spanish colonisation of the Americas started with the colonisation of the Caribbean. It was followed by the conquest of powerful pre-Columbian polities in Central Mexico and the Pacific Coast of South America. Miscegenation was the rule between the native and the Spanish cultures and people. An expedition sponsored by the Spanish crown completed the first voyage around the world in human history, the Magellan-Elcano circumnavigation. The tornaviaje or return route from the Philippines to Mexico made possible the Manila galleon trading route. The Spanish encountered Islam in Southeast Asia and in order to incorporate the Philippines, Spanish expeditions organised from newly Christianised Mexico had invaded the Philippine territories of the Sultanate of Brunei. The Spanish used the conflict between Pagan and Muslim Philippine kingdoms to pit them against each other thus using the "Divide and Conquer Principle". The Spanish considered the war with the Muslims of Brunei and the Philippines, a repeat of the ''Reconquista''.