I drafted this on a lark some time back. Here's a skeleton timeline based around the goal of the Empire of Japan gaining sizeable colonial territory without getting totally smacked down in the 20th Century. Feel free to critique the heck out of it!
POD 1898: The United States naval vessel Maine leaves Cuba peacefully; there is no war between the Kingdom of Spain and the United States.
1899: The German Empire purchases the Phillippines and various Pacific islands from Spain.
1902: The British Empire and the Empire of Japan sign a naval alliance.
1906: The Empire of Japan, victorious in the Russo-Japanese War, secures control over Korea, southern Sakhalin, the Kuriles, and Liaodong.
1911: The Empire of China falls into what will be a long period of civil war.
1914: The Great War erupts in Europe; the Empire of Japan honors its alliance to the British Empire by seizing German assets in China, the German Pacific islands, and invading the Philippines.
1918: The Great War ends with the defeat of the German Empire and the collapse of the Russian Empire into civil war.
1919-1922: The Japanese are one of several nations to intervene in the Russian Civil War.
1923: The Empire of Japan refuses to return Kamchatka and Sakhalin to the Soviet Union.
1920s onward: The Empire of Japan discovers in the Philippines just how difficult it can be to occupy an unwilling colony. This has an impact on Japan's designs on China.
1927: The forces of Chiang Kai-Shek gain control of nearly all of China proper
1932: Japanese forces establish the puppet state of Manchukuo.
1939: The Second World War erupts in Europe.
1940: In response to German victories in Europe, the Empire of Japan invades Indochina, Burma, and the East Indies; the Republic of China is ceded control of Liaodong and Shangdong, in exchange for neutrality; China takes the initiative to seize Tibet.
1942: The United States reluctantly joins the war against Germany after several high-profile losses to German U-boats; the Empire of Japan allows Union Lend-lease materiel to enter the Soviet Union through Vladivostok after tense negotiations.
1943: The British Empire agrees to the peace settlement offered by the Empire of Japan whereby the British regain Burma and an expanded Siam remains neutral territory while the Japanese are recognized in the East Indies and Indochina, and the Japanese government agrees to a payment in raw materials for the British war effort.
The Republic of China seizes Mongolia in a skirmish with the ailing Soviet Union.
1945: The Second World War ends in unconditional German surrender; the map of Europe is redrawn with Germany occupied by the British, Union, French, and the Soviets.
The Empire of Japan is deeply resented by the Europeans, including of course the Soviets, and still faces severe tensions with the Republic of China over Manchukuo. However, it is in control of Kamchatka etc, Korea, Taiwan, Manchuria, the Philippines, Indochina, and all the East Indies. The total population of this colonial empire is roughly double to treble the population of the Home Islands. Now can they hold on to this for very long?
And how much have I gotten wrong?
POD 1898: The United States naval vessel Maine leaves Cuba peacefully; there is no war between the Kingdom of Spain and the United States.
1899: The German Empire purchases the Phillippines and various Pacific islands from Spain.
1902: The British Empire and the Empire of Japan sign a naval alliance.
1906: The Empire of Japan, victorious in the Russo-Japanese War, secures control over Korea, southern Sakhalin, the Kuriles, and Liaodong.
1911: The Empire of China falls into what will be a long period of civil war.
1914: The Great War erupts in Europe; the Empire of Japan honors its alliance to the British Empire by seizing German assets in China, the German Pacific islands, and invading the Philippines.
1918: The Great War ends with the defeat of the German Empire and the collapse of the Russian Empire into civil war.
1919-1922: The Japanese are one of several nations to intervene in the Russian Civil War.
1923: The Empire of Japan refuses to return Kamchatka and Sakhalin to the Soviet Union.
1920s onward: The Empire of Japan discovers in the Philippines just how difficult it can be to occupy an unwilling colony. This has an impact on Japan's designs on China.
1927: The forces of Chiang Kai-Shek gain control of nearly all of China proper
1932: Japanese forces establish the puppet state of Manchukuo.
1939: The Second World War erupts in Europe.
1940: In response to German victories in Europe, the Empire of Japan invades Indochina, Burma, and the East Indies; the Republic of China is ceded control of Liaodong and Shangdong, in exchange for neutrality; China takes the initiative to seize Tibet.
1942: The United States reluctantly joins the war against Germany after several high-profile losses to German U-boats; the Empire of Japan allows Union Lend-lease materiel to enter the Soviet Union through Vladivostok after tense negotiations.
1943: The British Empire agrees to the peace settlement offered by the Empire of Japan whereby the British regain Burma and an expanded Siam remains neutral territory while the Japanese are recognized in the East Indies and Indochina, and the Japanese government agrees to a payment in raw materials for the British war effort.
The Republic of China seizes Mongolia in a skirmish with the ailing Soviet Union.
1945: The Second World War ends in unconditional German surrender; the map of Europe is redrawn with Germany occupied by the British, Union, French, and the Soviets.
The Empire of Japan is deeply resented by the Europeans, including of course the Soviets, and still faces severe tensions with the Republic of China over Manchukuo. However, it is in control of Kamchatka etc, Korea, Taiwan, Manchuria, the Philippines, Indochina, and all the East Indies. The total population of this colonial empire is roughly double to treble the population of the Home Islands. Now can they hold on to this for very long?
And how much have I gotten wrong?