So here's my timeline:
1910- Mexican Revolution begins
1914- WW1 Begins. Italy doesn't betray Germany in this timeline
1916- Chihuahua secedes from Mexico as Republic of Chihuahua
1916- Republic of Sonora forms out of Mexican state of Sonora
1916- Republic of Rio Grande is revived
1916- Mexican Revolution ends. Mexico keeps territories south of the New Republics, and Baja California. All revolutionaries leave to new nations.
1917- Russia collapses into revolution. US intervenes.
1917- Germany sends a message to Mexico, attack US bases in Puerto Rico, Guantanamo, and New Orleans, and allow future basing of German U-boats, and we'll send you reconstruction and military aid. Excess troops, planes, and tanks no longer needed on the eastern front will be sent to assist. Will support creation of industrial base, and send trainers, advisers, and commanders. You can keep Puerto Rico, Virgin Isles, South California, Guantanamo, British Honduras (Modern Belize), Jamaica, all British and French territories in the Lesser Antilles, British and French Guinea, Clipperton Island, the Cayman Islands, and the Panama Canal Zone, and a portion of the German U-boat fleet if we are victorious.
1917- Eager to gain such strategic territory after losing so much, Mexico joins the central powers in WW1 and attacks US along with German U-boat fleets and air squadrons in a blitzkrieg manner. Attack LA, San Francisco, Guantanamo, New Orleans, South Florida, Puerto Rico
1917- Desperate to turn the tide of an uncerrtain war, the allies offer Corsica, Austrian Italy, Dalmatia, ownership of Tunis in Tunisia, Malta, and Cyprus in exchange for Italy's loyalty. Italy betrays the Central powers and joins the allies.
1918- Germany and Austria-Hungary are defeated and all German forces, some 32,000 soldiers and 1200 workers, are abandoned in Mexico and the Caribbean. Most in the Caribbean head to Mexico.
1918- Mexico defeated by US and collapses into another revolution. US annexes Baja California and sends more troops to Europe to fight Germany. Every man and woman Mexican (about 5 million) fight against the autocratic Mexican government and the US occupiers. They use leftover German weapons and factories to support their war. Leftover Germans assimilate into Mexican society.
1919- Ottoman Empire and Bulgaria surrender and WW1 ends. German shifts to OTL borders. Japan annexes north New Guinea and German East Indies. US takes German Samoa. Greece expands into Turkey, takes Constantinople. Armenians form a small state. Italy gains the promised territories.
1922- The Soviet Union is formed
1924- United Mexican states form. Three major parties exist within the nation, the nationalistas, liberales, and communistas. The former two hate dislike each other, but they hate the comunistas even more.
1926- The United Mexican states collapses into civil war.
1927- Soviet Union begins sending troops and weapons to Mexico to support the Comunistas.
1927- The United States begins to intervene on the side of the Liberales and Nationalistas. This skews Mexican public opinion towards the comunistas. The population sees the Liberales and Comunistas as puppets of the imperialist United States.
1929- Great Depression begins. The United States economy is cut in half and the government can barely afford the intervention.
1929- The United States withdraws from Mexico, unable to continue intervention. The Soviet Union increases the number of supplies being sent.
1930- Comunistas take power. The Soviet Mexican Republic is founded.
1931- Soviet Pact signed: The Union of Soviet Socialist Republics and the Soviet Mexican Republic form a military alliance.
1931- Mexico takes over Guatemala
1931- Soviet Union takes over Armenian State.
1932- Mexico takes over Honduras and El Salvador
1933- Hitler takes over Germany
1934- Mexico takes over Nicaragua
1936- Francisco Franco takes over Spain
1936- Fascists take control of Turkey
1937- Japan invades Manchuria
1937- Kiev Pact signed: Military alliance formed between the Soviet Union, Soviet Mexican Republic, People's Republic of Mongolia, and the Chinese communist party.
1938- Germany annexes Austria, the Sudetenland, and Bohemia and Moravia
1939- Italy annexes Corsica and Dalmatia. Yugoslavia becomes a protectorate.
1940- Axis pact signed between Italy, Spain, Japan, Portugal, and Germany
1941- Germany signs non-agression pact with the Soviet Union
1941- Germany and the Soviet Union invade Poland, Britain and France declare war on both
1941- Bulgaria, Hungary, and Romania join the Axis.
1941- Italy Invades and annexes Albania.
1941- Soviet Union invades Finland, allied powers support Finland. Finland joins the Allies.
1942- Nicaragua Canal completed by Mexico, Mexico begins reasserting itself and opposing the United States.
1942- Italy and Turkey invade Greece, Turkey joins axis and Greece joins allies.
1942- Germany, Japan, and Turkey attack the Soviet Union occupied battling the Finns.
I edited the timeline to make an earlier POD and make it a little more plausible.
I'm gonna let you guys continue the timeline from here.
