Port Moresby in the context of "Pacific War"

Papua New Guinea (PNG), officially the Independent State of Papua New Guinea, is an island country in Oceania that comprises the eastern half of the island of New Guinea and offshore islands in Melanesia, a region of the southwestern Pacific Ocean north of Australia. It has a land border with Indonesia to the west and maritime borders with Australia to the south and the Solomon Islands to the east. Its capital is Port Moresby. The country's 462,840 km (178,700 sq mi) includes a large mainland and hundreds of islands. The majority of the country's land is held under the collective customary ownership of local clans. This protected tenure is globally exceptional due to remarkable legislative protections granted in PNG’s national constitution.

The territory of Papua New Guinea was split in the 1880s between German New Guinea in the north and the British Territory of Papua in the south, the latter of which was ceded to Australia in 1902. All of present-day Papua New Guinea came under Australian control following World War I, although it remained two distinct territories. The nation was the site of fierce fighting during the New Guinea campaign of World War II, following which the two territories were united in 1949. Papua New Guinea became an independent Commonwealth realm in 1975. Representing the King is a Governor-General. Politics takes place within a Westminster system, with the government led by a Prime Minister. Members of the national parliament also serve as provincial leaders.

New Guinea (Tok Pisin: Niugini; Hiri Motu: Niu Gini; Indonesian: Papua, fossilized Nugini, also known as Papua or historically Irian) is the world's second-largest island, with an area of 785,753 km (303,381 sq mi). It has the third-largest remaining rainforest globally, and the highest plant biodiversity of any island. Located in Melanesia in the southwestern Pacific Ocean, the island is separated from Australia by the 150-kilometre (81-nautical-mile; 93-mile) wide Torres Strait, though both landmasses lie on the same continental shelf, and were united during episodes of low sea level in the Pleistocene glaciations as the combined landmass of Sahul. Numerous smaller islands are located to the west and east. The island's name was given by Spanish explorer Yñigo Ortiz de Retez during his maritime expedition of 1545 because of the perceived resemblance of the indigenous peoples of the island to those in the African region of Guinea.

The eastern half of the island is the major land mass of the nation of Papua New Guinea. The western half, known as Western New Guinea, forms a part of Indonesia and is organized as the provinces of Papua, Central Papua, Highland Papua, South Papua, Southwest Papua, and West Papua. The two major cities on the island are Port Moresby and Jayapura.

The governor-general of Papua New Guinea (Tok Pisin: Gavena-Jeneral bilong Papua Niugini) is the representative of the Papua New Guinean monarch, currently King Charles III, in Papua New Guinea. The governor-general is appointed by the monarch after their nomination by the National Parliament by vote. The functions of the governor-general include appointing ministers, judges, and ambassadors; and issuing writs for election.

In general, the governor-general observes the conventions of the Westminster system and responsible government, maintaining a political neutrality, and has to always act only on the advice of the prime minister. The governor-general also has a ceremonial role: hosting events at the official residence—Government House in the capital, Port Moresby—and bestowing Papua New Guinean honours to individuals and groups who are contributing to their communities. When travelling abroad, the governor-general is seen as the representative of Papua New Guinea and its monarch. The governor-general is supported by a staff headed by the official secretary to Government House

For administrative purposes, Papua New Guinea is divided into administrative divisions called provinces. There are 22 provincial-level divisions, which include 20 provinces, the Autonomous Region of Bougainville, and the National Capital District of Port Moresby.

In 2009, the National Parliament of Papua New Guinea created two additional provinces, that officially came into being on 17 May 2012. They were Hela Province, which was split from Southern Highlands Province, and Jiwaka Province, which was split from Western Highlands Province.

Jayapura (formerly Hollandia) is the capital and largest city of the Indonesian province of Papua. It is situated on the northern coast of New Guinea island and covers an area of 940.0 km (362.9 sq mi). The city borders the Pacific Ocean and Yos Sudarso Bay to the north, the country of Papua New Guinea to the east, Keerom Regency to the south, and Jayapura Regency to the west.

With a population of 398,478 according to the 2020 census, Jayapura is the most populous city in the entire island of New Guinea, surpassing Port Moresby, the national capital and largest city of Papua New Guinea. During the 2010-2020 decade it was also the fastest-growing city in Indonesia, with the population increasing by 55.23% between 2010 and 2020. The official estimate as at mid 2023 was 414,862 (comprising 220,024 males and 194,838 females).

Hiri Motu, also known as Police Motu, Pidgin Motu, or just Hiri, is a language of Papua New Guinea, which is spoken in surrounding areas of its capital city, Port Moresby.

It is a simplified version of Motu, from the Austronesian language family. Although it is strictly neither a pidgin nor a creole, it possesses some features from both language types. Phonological and grammatical differences make Hiri Motu not mutually intelligible with Motu. The languages are lexically very similar, and retain a common, albeit simplified, Austronesian syntactical basis. It has also been influenced to some degree by Tok Pisin.

The Battle of the Coral Sea, from 4 to 8 May 1942, was a major naval battle between the Imperial Japanese Navy (IJN) and naval and air forces of the United States and Australia. Taking place in the Pacific Theatre of World War II, the battle was the first naval action in which the opposing fleets neither sighted nor fired upon one another, attacking over the horizon from aircraft carriers instead. It was also the first military battle between aircraft carriers.

To strengthen their defensive position in the South Pacific, the Japanese decided to invade and occupy Port Moresby (in New Guinea) and Tulagi (in the southeastern Solomon Islands). The plan, Operation Mo, involved several major units of Japan's Combined Fleet. Two fleet carriers and a light carrier were assigned to provide air cover for the invasion forces, under the overall command of Admiral Shigeyoshi Inoue. The U.S. learned of the Japanese plan through signals intelligence and sent two U.S. Navy carrier task forces and a joint Australian-American cruiser force to oppose the offensive, under the overall command of U.S. Admiral Frank J. Fletcher.

The Pacific War, sometimes called the Asia–Pacific War or the Pacific Theater, was the theater of World War II fought between Japan and the Allies in East and Southeast Asia, the Pacific and Indian Oceans, and Oceania. It was geographically the largest theater of the war, including the Pacific Ocean theater, the South West Pacific theater, the Second Sino-Japanese War, and the brief Soviet–Japanese War, and included some of the largest naval battles in history. War between Japan and the Republic of China had begun in 1937, with hostilities dating back to Japan's invasion of Manchuria in 1931, but the Pacific War is more widely accepted to have begun in 1941, when the United States and United Kingdom were brought into the war, after being attacked by Japan.

Japan invaded French Indochina in 1940, and extended its control over the entire territory in July 1941. On 7–8 December 1941, Japan attacked the American naval base at Pearl Harbor in Hawaii; the U.S.-held Philippines, Guam, and Wake Island; and the British colonies of Malaya, Singapore, and Hong Kong, followed by a Japanese declaration of war. The Japanese achieved great success over the next 6 months, allying with Thailand and capturing the listed territories (except for Hawaii) in addition to Borneo, New Britain, the Dutch East Indies, Burma, the Solomon and Gilbert Islands, and parts of New Guinea. In May 1942, Japanese and Allied aircraft carriers fought at the Battle of Coral Sea, resulting in the retreat of a Japanese invasion force headed for Port Moresby. In June, Japan invaded the Aleutian Islands, and in the central Pacific was defeated at the Battle of Midway, considered a key turning point in the war. After this point, the Japanese experienced great difficulty replacing their losses in ships and aircraft as the U.S. produced ever increasing numbers of both.