1900-01-01:

1913-01-01:

1914-11-11:

1921-05-09:

1942-03-31:

1943-12-15:

1944-11-21:

1945-11-01:

1949-11-06:

1952-01-01:

1962-11-01:

1970-01-01:

1971-03-12:

1975-09-01:

1976-08-09:

1989-01-01:

1990-05-17:

2005-06-15:

1900-01-01:

1914-11-11:

1900-01-01:

GERMANY

1914-11-11:

AUSTRALIA +

UNITED KINGDOM +

1920-12-17:

AUSTRALIA +

UNITED KINGDOM +

LEAGUE OF NATIONS +

1942-03-31:

JAPAN

1943-12-15:

AMERICA

1944-11-21:

AUSTRALIA +

UNITED KINGDOM +

1946-12-08:

AUSTRALIA +

UNITED KINGDOM +

UNITED NATIONS +

1971-07-01:

AUSTRALIA +

UNITED KINGDOM +

1975-09-01:

NORTH SOLOMONS

1976-08-09:

PAPUA NEW GUINEA +

UNITED KINGDOM +

1989-01-01:

BOUGAINVILLE +

PAPUA NEW GUINEA +

UNITED KINGDOM +

1990-05-17:

BOUGAINVILLE

1993-01-01:

PAPUA NEW GUINEA +

UNITED KINGDOM +

1998-08-01:

PAPUA NEW GUINEA +

UNITED KINGDOM +

UNITED NATIONS +

2005-07-01:

PAPUA NEW GUINEA +

UNITED KINGDOM +

1900-01-01:

  Kieta

2012-01-01:

  Arawa + Kieta

1900-01-01:

  KIETA

2000-01-01:

  CENTRAL BOUGAINVILLE

1900-01-01:

1914-11-11:

1942-03-31:

1945-09-08:

1971-07-01:

2000-01-01: