Events[]
March[]
- 2 - The Arrow Cross party takes over in Hungary.
- 12 - and unite.
- 14 - annex the Prince Edward Islands.
- 15 - presents an ultimatum to Germany, demanding Austria's independence.
- 16
- Britain declare war on Germany.
- , , and declare war on Germany.
- 17 - responds to the declaration of war saying "The British Empire is nothing compared to the German Reich."
- 19 - German U Boat sinks off the coast of the Netherlands.
- 20
- - declare war on the U.K.
- - declare war on Germany.
- 21 - - Australia, Canada, New Zealand and South Africa declare war on Hungary.
- 23 - - The takes place. RAF and Luftwaffe planes fight over the skies of . The Dutch air force send up 15 aircraft, resulting in a three way battle. The League of Nations demand Britain pay reparations.
- 24 - . Britain and the commonwealth all leave the league of nations. The former British, Australian, South African and New Zealand mandates are transferred to become colonies.
- 27 - Hungary is expelled from the League.
- 28 - The Reformed Government of the Republic of China, a Japanese puppet state, is formed.
- 29 - The British colony (formerly mandate) of Palestine is split into Palestine (Jerusalem Protectorate) and Jordan (Transjordan Protectorate).
April[]
- 16 - - Chinese forces lose half their army at Shandong to the Japanese
- 18 - - surrender to the .
- 20 - The start of the .
- , , , , and leave.
- 21 - leave the league
- 22 -
- 24
- and leave the league.
- German land on the
- 25 - , and leave the league
- 27 - and leave the league
- 28 - , , , and leave the league.
May[]
- 2 - The Territories of Papua and New Guinea and merged to form the Territory of Papua New Guinea
Nations[]
Sovereign States[]
- Afghanistan - Kingdom of Afghanistan
- Albania - Kingdom of Albania
- Andorra- Principality of Andorra
- Argentina - Argentine Republic
- - Commonwealth of Australia
- - Federal State of Austria (to March 12)
- - Kingdom of Belgium
- Bolivia - Republic of Bolivia
- Brazil - Republic of the United States of Brazil
- - Kingdom of Bulgaria
- - Dominion of Canada
- Chile - Republic of Chile
- - Republic of China (to April 18)
- From April 18, Tibet, Sinkaing, Mengjiang, Manchukho and the Japanese territory of China.
- Columbia - Republic of Columbia
- Costa Rica - Republic of Costa Rica
- Cuba - Republic of Cuba
- - Czechoslovakia
- - Free City of Danzig
- - Kingdom of Denmark
- Dominican Republic
- Ecuador - Republic of Ecuador
- - Kingdom of Egypt
- El Salvador - Republic of El Salvador
- Estonia - Republic of Estonia
- Finland - Republic of Finland
- - Third French Republic
- - Third Reich
- Greece - Kingdom of Greece
- Guatemala - Republic of Guatemala
- Haiti - Republic of Haiti
- - Republic of Hatay (From September 7 to December 18)
- Honduras - Republic of Honduras
- Hungary - Republic of Hungary (until March 2) (from March 2)
- Iceland - Kingdom of Iceland
- Iran - Imperial State of Iran
- Iraq - Kingdom of Iraq
- Ireland
- Italy - Kingdom of Italy
- - Empire of Japan
- Latvia - Republic of Latvia
- Liberia - Republic of Liberia
- - Principality of Liechtenstein
- Lithuania - Republic of Lithuania
- Luxembourg - Grand Duchy of Luxembourg
- Mexico - United Mexican States
- Monaco - Principality of Monaco
- Mongolia - People's Republic of Mongolia
- - Kingdom of Nepal
- - Kingdom of the Netherlands
- - Dominion of New Zealand
- Nicaragua - Republic of Nicaragua
- Norway - Kingdom of Norway
- Panama - Republic of Panama
- Paraguay - Republic of Paraguay
- Peru - Republic of Peru
- - Republic of Poland
- - Portuguese Republic
- Romania - Kingdom of Romania
- San Marino - Most Serene Republic of San Marino
- Saudi Arabia - Kingdom of Saudi Arabia
- Siam - Kingdom of Siam
- (from April 22)
- - Union of South Africa
- - Union of Soviet Socialist Republics
- Spain - Spanish Republic
- Sweden - Kingdom of Sweden
- - Swiss Confederation
- Tangier - Free City of Tangier
- - Tibetan State (from April 22)
- Turkey - Republic of Turkey
- - United Kingdom of Great Britain and Northern Ireland
- - United States of America
- Uruguay - Eastern Republic of Uruguay
- Vatican City - State of the Vatican City
- Venezuela - United States of Venezuela
- Yemen - Mutawakkilite Kingdom of Yemen
- Yugoslavia - Kingdom of Yugolsavia
Puppet States[]
Japan[]
- China - Provisional Government of the Republic of China (to April 22)
- China - Reformed Government of the Republic of China (March 28 - April 22)
- East Hebei - East Hebei Autonomous Council (to February 1)
- - Great Empire of Manchuria
- - Mongol United Autonomous Government
- Shanghai - Dadao Municipal Government of Shanghai (to April 22)
Autonomous/Special/Demilitarized Areas[]
China[]
Soviet Union[]
United Kingdom[]
United States[]
League of Nation Mandates[]
- Cameroon - British Cameroons (Under British administration) (to 24 March)
- Cameroun (Under French administration)
- Lebanon - State of Great Lebanon (Under French administration)
- Namibia - South West Africa (Under South African administration) (to 24 March)
- Nauru (Under Australian, New Zealand and British administration) (to 24 March)
- New Guinea - Territory of New Guinea (Under Australian administration) (to 24 March)
- Palestine - British Mandate of Palestine (Under British administration) (to 24 March)
- Ruanda-Urundi (Under Belgian administration)
- Syria - French Mandate of Syria (under French administration)
- Tanganyika (Under British administration) (to 24 March)
- Togoland - British Togoland (Under British administration) (to 24 March)
- Togoland - French Togoland (Under French administration)
- Western Samoa (Under New Zealand administration) (to 24 march)
Colonies/Territories[]
Australia[]
- Antarctica - Australian Antarctic Territory
- Ashmore and Cartier Islands
- Jervis Bay Territory
- Lord Howe Island
- Nauru (from 24 March)
- New Guinea - Territory of New Guinea (24 March to May 2)
- Norfolk Island
- Papua New Guinea - Territory of Papua and New Guinea (from May 2)
- Torres Strait Islands
Belgium[]
Chile[]
Denmark[]
Egypt[]
Finland[]
France[]
- Adélie Land
- Algeria
- Comoros
- Equatorial Africa - French Equatorial Africa
- Guadeloupe
- Guiana - French Guiana
- India - French India
- Indochina - Indochinese Union
- Kwang-Chou-Wan
- Madagascar
- Martinique
- Mayotte
- Morocco - French Protectorate of Morocco
- New Caledonia
- New Hebrides - New Hebrides Condominium
- Polynesia - French Polynesia
- Réunion
- Saint Barthélemy
- Saint Martin
- Saint Pierre and Miquelon
- Somaliland' - French Somaliland
- Tunisia - Beylik of Tunis
- Wallis and Futuna
- West Africa - French West Africa
Italy[]
Japan[]
- Bonin Islands
- - Japanese territory of China (from April 22)
- Karafuto - Karafuto Prefecture
- Korea
- Kurile Islands
- Ryukyu Islands
- South Pacific - South Seas Islands
- Taiwan
- Volcano Islands
Netherlands[]
New Zealand[]
Norway[]
Portugal[]
- Angola - Portuguese West Africa
- Azores
- Cabinda - Portuguese Congo
- Cape Verde
- Guinea - Portuguese Guinea
- India - Portuguese India
- Macau
- Madeira
- Moçambique - Portuguese East Africa
- São Tomé and Príncipe
- Timor - Portuguese Timor
South Africa[]
Spain[]
- Canary Islands
- Fernado Poo and Anabon
- Guinea - Spanish Guinea
- Morocco - Spanish West Africa
- Sahara - Spanish Sahara
United Kingdom[]
- Aden - Aden Colony
- Aden - Aden Protectorate
- Bahamas - The Bahamas
- Bahrain - Kingdom of Bahrain, Protectorate
- Barbados
- Basutoland - Territory of Basutoland
- Bechuanaland - Bechuanaland Protectorate
- Bermuda
- Bhutan - Bhutan Protectorate
- Brunei - Brunei Protectorate
- Burma
- Cameroon - British Cameroons (from 24 March)
- Cayman Islands - Cayman Islands (Jamaica)
- Ceylon - British Ceylon
- Christmas Island
- Cocos (Keeling) Islands
- Cyprus
- Falkland Islands
- Fiji
- Gambia - The Gambia
- Gibraltar
- Gilbert and Ellice Islands
- File:FFlag of the Gold Coast.svg Gold Coast - Colony of Gold Coast
- Guiana - British Guiana
- Honduras - British Honduras
- Hong Kong
- Jamaica
- Jordan - Transjordan Protectate (from 29 March)
- Kenya - Kenya Colony
- Kuwait - Kuwait
- Leeward Islands - British Leeward Islands
- Malay - Federated Malay States
- Malay - Unfederated Malay States
- Maldives
- Malta
- Mauritius
- Muscat and Oman
- Nigeria - Nigeria Protectorate
- Nyasaland - Nyasaland Protectorate
- North Borneo - British North Borneo
- North Rhodesia
- Pacific Territories - British Western Pacific Territories
- Palestine - British Palestine (24 March - 29 March)
- Palestine - Jerusalem Protectorate (from 29 March)
- Qatar
- The Raj - British Raj
- St. Helena - The Territory of Saint Helena
- Seychelles
- Sierra Leone
- Somaliland - British Somaliland
- South Rhodesia - Colony of South Rhodesia
- Straits Settlements - British Straits Settlements
- Sudan - Anglo-Egyptian Sudan
- Tanganyika (from 24 March)
- Togoland - British Togoland (from 24 March)
- Windward Islands - British Windward Islands
United States[]
- - Alaska - Territory of Alaska
- - American Samoa
- - Baja Neuvo Bank
- - Baker Island
- - Corn Islands
- - Guam - Territory of Guam
- - Guantanamo Bay - Guantanamo Bay Naval Base Concession
- - Hawaii - Territory of Hawaii
- - Jarvis Island
- - Johnston Atoll
- - Kingston Reef
- - Midway Island
- - Navassa Island
- - Palmayra Atoll
- - Panama Canal Zone
- - Puerto Rico
- - Quita Sueno Bank, Roncador Cay & Serrana Bank
- - Serranilla Bank
- - Virgin Islands - United States Virgin Islands
- - Wake Island