Greater East Asia Co-Prosperity Sphere in the context of "Japanese colonial empire"

The Axis powers, originally called the Rome–Berlin Axis and also Rome–Berlin–Tokyo Axis, was the military coalition which initiated World War II and fought against the Allies. Its principal members were Nazi Germany, the Kingdom of Italy and the Empire of Japan. The Axis were united in their far-right positions and general opposition to the Allies, but otherwise lacked comparable coordination and ideological cohesion.

The Axis grew out of successive diplomatic efforts by Germany, Italy, and Japan to secure their own specific expansionist interests in the mid-1930s. The first step was the protocol signed by Germany and Italy in October 1936, after which Italian leader Benito Mussolini declared that all other European countries would thereafter rotate on the Rome–Berlin axis, thus creating the term "Axis". The following November saw the ratification of the Anti-Comintern Pact, an anti-communist treaty between Germany and Japan; Italy joined the Pact in 1937, followed by Hungary and Spain in 1939. The "Rome–Berlin Axis" became a military alliance in 1939 under the so-called "Pact of Steel", with the Tripartite Pact of 1940 formally integrating the military aims of Germany, Italy, Japan, and later followed by other nations. The three pacts formed the foundation of the Axis alliance.

Syonan (Japanese: 昭南, Hepburn: Shōnan; Kunrei-shiki: Syônan), officially Syonan Island (Japanese: 昭南島, Hepburn: Shōnan-tō; Kunrei-shiki: Syônan-tô), was the name for Singapore when it was occupied and ruled by the Empire of Japan, following the fall and surrender of British military forces on 15 February 1942, 6:20 p.m. local time, during World War II.

The Japanese military forces occupied Singapore after defeating the combined British, Indian, Australian, Malayan and the Straits Settlements garrison in the Battle of Singapore within 7 days. The occupation was to become a major turning point in the histories of several nations, including those of Japan, Britain, and Singapore. Singapore was renamed Syonan-to, meaning "Light of the South Island" and was also included as part of the Greater East Asia Co-Prosperity Sphere (Japanese: 大東亜共栄圏, Hepburn: Dai Tōa Kyōeiken).

The Empire of Vietnam was a short-lived puppet state of Imperial Japan between March 11 and August 25, 1945. It was a member of the Greater East Asia Co-Prosperity Sphere. It was ruled by the Nguyễn dynasty and created when Emperor Bảo Đại declared independence for Vietnam (Tonkin and Annam) from French protection. At the end of its existence, on 14 August 1945, the empire also successfully reclaimed Cochinchina as part of Vietnam.

The August Revolution (Vietnamese: Cách-mạng tháng Tám, (Vietnamese pronunciation: [kǎk mâˀŋ t̺ʰǎŋ tǎːm])), also known as the August General Uprising (Vietnamese: Tổng khởi-nghĩa giành chính-quyền tháng Tám, lit. 'the Total uprising to seize power in August', Vietnamese pronunciation: [tôŋ͡m xɤ̂j ŋɥiə̌ˀ ʑàjŋ cǐjŋ kwiə̀n t̺ʰǎŋ tǎːm]), was a revolution led by the Việt Minh against the Empire of Vietnam from 13 to 28 August 1945. The Empire of Vietnam was led by the Nguyễn dynasty and was backed by Japan as a member of the Greater East Asia Co-Prosperity Sphere. The Việt Minh, a political league de facto led by the Communist Party, was created in 1941 and designed to appeal to a wider population than the communists could command. The revolution had the participation of factions that did not follow the Việt Minh.

The Japanese army in Vietnam generally did nothing to prevent the revolution as they de facto surrendered to the Allies in World War II. There was a sporadic clash in Thái Nguyên with inconclusiveness. Facing a strong movement of the Viet Minh, the Empire of Vietnam refused Japan's request for help because its prime minister and emperor did not want foreign army to suppress the Việt Minh when they supported national unity and did not discover communist nature of this organization, leading to the revolution happening peacefully.

Hachirō Arita (有田 八郎, Arita Hachirō; 21 September 1884 – 4 March 1965) was a Japanese politician and diplomat who served as the Minister for Foreign Affairs for three terms. He coined the term Greater East Asia Co-Prosperity Sphere, which provided an official agenda for Imperial Japan's expansionism.

After the war, Arita was active as a leftist politician. The circumstances surrounding his second marriage and his unsuccessful 1959 run for Governor of Tokyo served as the model for the novel After the Banquet by Yukio Mishima. This led to a famous court case in which Arita successfully sued for invasion of privacy.