Pohnpei’s history is similar in many ways to that of the other members of the Federated States of Micronesia. Settled an estimated 2,000 years ago, by the time the Spanish arrived in the mid-1500s Pohnpei had developed an intricate society based on chiefs and clans. The islanders of Pohnpei chased most colonizers away from their lush, rainy island until the 19th century. Pohnpei then changed hands in the manner described above: the Spanish sold it to Germany, Japan seized it before and during World War I, the Americans bombed in World War II and the Americans have been the main colonial power ever since. Today Pohnpei serves as the main governmental center of the Federated States of Micronesia and has become quite Westernized compared to its neighbors.