Papua New Guinea notable feature in common for the two landmasses is the existence of several species of marsupial mammals, including some kangaroos and possums, which are not found elsewhere. Papua New Guinea is a megadiverse country. Many of the other islands within PNG territory, including New Britain, New Ireland, Bougainville, the Admiralty Islands, the Trobriand Islands, and the Louisiade Archipelago, were never linked to New Guinea by land bridges. As a consequence, they have their own flora and fauna; in particular, they lack many of the land mammals and flightless birds that are common to New Guinea and Australia. Australia and New
Australian occupation of German New Guinea remain free for the entire war. After the Treaty of Versailles of 1919, the victorious Allies divided all German's colonial possessions among themselves. German New Guinea became the Territory of New Guinea, a League of Nations Mandate Territory under Australian administration. Australian occupation of German New Guinea The Australian occupation of German New Guinea was the takeover of the Pacific colony of German New Guinea in September – November 1914 by an expeditionary force from Australia, called the Australian Naval and Military Expeditionary Force. German New Guinea () was an Imperial German protectorate from 1884. German New Guinea consisted of