From 1565 to 1815, Guam and the Northern Mariana Islands, the only Spanish outposts in the Pacific Ocean east of the Philippines, were an important resting stop for the Manila galleons, a fleet that covered the Pacific trade route between Acapulco and Manila.
De 1565 a 1815, Guam e as Illas Marianas do Norte, foron o único posto de avanzada español no Océano Pacífico ao leste das Filipinas, foi unha importante parada de descanso para os galeón de Manila, unha frota que cubría a ruta comercial do Pacífico entre Acapulco e Manila.