1. A ship (galleon) trade going back and forth between Manila and Acapulco, Mexico
2. Started when Andress de Urdaneta, in convoy under Miguel Lopez de Legaspi, discovered a return route from Cebu to Mexico in 1565
3. The trade serves as the central income-generating business for Spanish colonists in the Philippines
4. Manila became a trading hub where China, India, Japan, and Southeast Asian countries sent their goods to be consolidated for shipping