| YEAR | DATE | EVENT |
| 1668 | 16 june | Spanish colony |
| 1899 | 1 july | German colony |
| 1914 | 3 october | Japan occupation |
| 1920 | 17 december | Japan Trust Administration |
| 1944 | 6 july | U.S. occupation |
| 1947 | 18 july | Part of U.S. Trust Administration |
|
|
| YEAR | DATE | EVENT |
| 1972 | 31 march |
|
| YEAR | DATE | EVENT |
| 1976 | 4 july |