Micronesia By Kc231 1500 Spanish explorers find islands of Micronesia 1850 Missionary and coconut trade begins 1880 Spain fails to claim Micronesia and many different islands 1914 Japan arrives to Micronesia 1939 Micronesia becomes a battleground for WWII 1947 Micronesia goes under a US administration 1979 Kosrae, Pohnpei, Chuuk and Yap Create a constitution, making the Federated States of Micronesia 1991 Micronesia joins the UN 2002 Typhoon Chata'an hits Chuuk Typhoon killed dozens of people 2004 Yap is badly damaged by Typhoon Sudel