| YEAR | DATE | EVENT | PRESIDENT | GOVERNOR |
| 1529 | Claimed by Spain | |||
| 1878 | 29 november | Kingdom under German protectorate | king Kabua | |
| 1885 | 22 october | German protectorate | Gustav von Oertzen | |
| 1886 | Wilhelm Knappe | |||
| 1888 | 14 april | Franz Leopold Sonnenschein | ||
| 1890 | 14 april | Friedrich Louis Max Biermann | ||
| 1893 | Ernst Schmidt-Dargitz | |||
| 1894 | 11 may | Georg Irmer | ||
| 1898 | 24 march | Eugen Brandeis | ||
| 1906 | 18 january | Part of German New Guinea | ||
| 1914 | 3 october | Japan occupation | ||
| 1920 | 17 december | Japan Trust administration | ||
| 1921 | Toshiro Tezuko | |||
| 1923 | 4 april | Gosuke Yokota | ||
| 1931 | 12 october | Mitsusada Horiguchi | ||
| 1931 | 21 november | Kazuo Tawara | ||
| 1932 | 5 february | Masayuki Matsuda | ||
| 1933 | 4 august | Hisao Hayashi | ||
| 1936 | 19 september | Kenjiro Kitajima | ||
| 1940 | 9 april | Shunsuke Kondo | ||
| 1943 | 5 november | Ishiro Hosokaya | ||
| 1944 | 23 february | U.S. occupation | ||
| 1947 | 18 july | U.S. Trust administration | ||
| 1979 | 1 may | Autonomy | Amata Kabua |