Obligated - whatever happened to ‘obliged’?

It's just another example of American English being used instead of the British English.
Language continually evolves and changes, especially now that we have access to the internet and American films and TV shows.

I once sent an email to ny daughter's work's email, using a Scottish word, meaning dirty. I was unaware that the meaning had changed over the years and my email was blocked by software. My daughter was mortified!