Alternative History
Kingdom of Laperousia
Royaume de Lapérousie
Laperousia
Timeline: Triangles and Crosses
OTL equivalent: Queensland, Northern Territory, Papua New Guinea, Vanuatu and New Caledonia
Flag of Laperousia (TaC) Coat of arms of Laperousia (TaC)
Flag Coat of arms
Motto: 
Per maria distantia ad oriens floreo
"By distant seas, in the east, I flourish"
Anthem: 
Montjoie Saint Denis! (royal)
Soyons unis, devenons frères (national)
Localization of Laperousia.
CapitalNouagie
Largest city Port Magdalene
Other cities Nantes-sur-Récif
Gimuy
Garramille
Official languages French
Regional languages Aboriginal languages
Religion Church of France
Demonym Laperousian
Government Unitary parliamentary constitutional monarchy
 -  Monarch Magdalena II
 -  High Commissioner Stéphanie Pagnier
 -  Prime Minister Jacques Marapé
Legislature Estates General of Laperousia
 -  Upper house Senate
 -  Lower house Chamber of Deputies
EstablishmentIndependence from France
 -  First settlements 1788–1820 
 -  Amsterdam Agreement 30 April 1830 
 -  Constitution 6 November 1973 
Area
 -  Total 3,764,971 km2 
1,453,663 sq mi 
Population
 -  2022 estimate 25,302,108 
Gini (2018) 34.2 (medium) 
HDI (2019) 0.815 (very high) 
Currency Laperousian franc (F) (LPF)
Time zone UTC+9 to UTC+11
Date formats dd/mm/yyyy
Drives on the right
Internet TLD .lp
Calling code +673

Laperousia (French: Lapérousie) officially the Kingdom of Laperousia (French: Royaume de Lapérousie) is a sovereign country comprising the northeastern portion of the Australian continent, eastern New Guinea, and a few minor islands. It borders Tasmania to the west and Ulimaroa to the south of the mainland, while it borders Papua in New Guinea. The capital is Nouagie, while the largest city is Port Magdalene. Other cities include Nantes-sur-Récif, Gimuy, Garramille, and Saint-Louis.

The Australian continent was first settled by Dutch explorers in what would become Tasmania during the early 18th century. However, in 1788, a fleet under Jean-François de Galaup, comte de Lapérouse made landfall near current-day Gimuy. With the eventual independence of Louisiana, King Louis XVI encouraged the pro-French population to resettle in Laperousia, then known as New Aquitaine. To avoid a war, Burgundy, France and the United Kingdom signed the Amsterdam Agreement, which divided the continent between them. In 1885, during the Berlin Conference, France gained the southeastern territory of New Guinea, as well as New Hebrides (now Vanuatu) and New Caledonia, while the rest was ceded by Germany after World War I.

In the meantime, there were several movements for autonomy for Laperousia, ranging from a Commonwealth-like system to full independence. Conventions between political movements and the representatives of the colony formed the basis of the Laperousian constitution, which was presented to the Estates General, to the approval of King John III. The country was invaded in the Papuan campaign during World War II. Constitution was reformed in 1973, in means to increase the autonomy from France.

Laperousia is an unitary parliamentary constitutional monarchy with a relatively decentralized government. Its population of a little over 25 million is at most concentrated in north and southeastern regions and part of New Guinea. It is ethnically diverse and multicultural, with Laperousian Papua being home of several customary communities in the rural regions. It is a member of the Society of Nations, Asia-Pacific Economic Cooperation, the Pacific Community, and the Francophonie.