Oh! I actually know the answer to this one! American newspaper ads charged by the letter, so a lot of people would eliminate unnecessary letters like the second L in “cancelled” or the U in “colour”. Some of these spelling changes were used so often that they stuck, and now Americans just spell some words differently.
In summary: Americans spell things weird because capitalism
In honour of its 10 year anniversary I want to show you guys my favourite Twilight shitpost image that my laptop says I saved to my hard drive in January of 2010
I find the twilight renaissance funny, and I’m all for eliminating cringe culture, but let’s remember that smeyer changed Quileute legends and beliefs to fit her narrative, gave animalistic/abusive traits to her Native characters, reinforcing the uncontrollable “savage” stereotype, made the “pure”, pale vampires constantly insult and antagonize the werewolves (whose land they were living on) for no reason, and overall wrote some pretty racist stuff about her Native characters