Well what do ya know, some Americans do know how to spell the word Centre correctly! Our wonderful English language has fascinated me for longer than I can remember. I’m so glad that I was born in an English speaking country, along with our United Kingdom, Canadian and Australian friends, and other countries.
I don’t claim to know for sure but wasn’t it Noah Webster that decided to remove and/or replace a few of the letters in our American English? That was stupid… Just saying! Doing so had no realistic purpose in my view other than to differentiate our English from the British. Occasionally you’ll notice different spellings here.