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Flag ratio: 10:19

Flag of the Trust Territory of the Pacific Islands; was used in the FSM 1965 - 1978

The flag of the United Nations was used in the FSM from 1947 - 1965

The flag of the United States was used in the FSM from 1944 - 1986
The flag of the Federated States of Micronesia (FSM) was adopted on November 10, 1979. The blue field represents the Pacific Ocean, while the four stars represent the four island groups in the federation: Chuuk, Pohnpei, Kosrae and Yap.
A similar design with six stars was in use from 1965 for the flag of the Trust Territory of the Pacific Islands, the extra stars representing Palau, the Marshall Islands and Northern Mariana, which chose not to participate in the Federation. (Kosrae was then part of Pohnpei so both were represented by one star.)