Gibb Shaib said

"I am in USA and I rarely encounter Adele's music. I think I heard it in the dentist's office last, when I had something done to my teeth in April. When I do hear Adele, I see her as "British." "

Well, the States made her!
She has certainly made the biggest impact of any "serious" pop musician for a long time.
She won a "best song" Oscar. She was Letterman, Ellen etc .
It would have been very hard to miss her.
And, then her " overweight" appearance created another massive debate reaching beyond pop music.
And, she has in a relative short time become one of the most "loved" pop stars in history.