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
Papua New Guinea tensions. In September 2017, Papua New Guinea rejected the West Papuan Independence Petition in the United Nations General Assembly, to the pleasure of Indonesia. From March to April 2018, a chain of earthquakes hit Papua New Guinea, causing various damage. Various nations from Oceania, Australia, the Philippines and Timor-Leste immediately sent aid to the country. Papua New Guinea is a Commonwealth realm. Queen Elizabeth II is its sovereign and head of state. The constitutional convention, which prepared the draft constitution, and Australia, the outgoing metropolitan power, had thought that Papua New Guinea would not remain a monarchy. The founders, however,