The Colony of Atlantis (CoA) played a sizeable part in the World Wars, not only did the Brits use Atlanteans as disposable meat shields in WWII, but the allies in general used CoA as a Mid-Atlantic base.
In WWI, Axolotlians revolted against the British Empire, with hopes of gaining independence, or at least getting invaded by other Allies to get a new colonizer, like the French or Americans, that would hopefully respect the Axolotlian culture, and languages. The British crushed all rebellions and used cultural cleansing tactics to erase anything that made CoA, Axolotlian.
In WWII, CoA again revolted, the British were busy, and all Allies were also busy, so Axolotlia, still got crushed, the Allies wouldn't let the strategic location revolt, then a single division of NAZIs got past Allied defenses and named a cactus “Hitlera Serntala”, the Axolotlian rebellion then destroyed the NAZIs in CoA.
After WWII, Axolotlians would be treated like absolute shit by the British.