The EMAs are the music awards of MTV Europe. Made more sense back in the 90s when there was an actual station called MTV Europe. (ah, good times) They had VJs from all european countries and the first awards were awarded in 1994 in Berlin. It's been a long time. These awards are the european version of the VMAs but they also award them to american artists (of course) and asian artists (just started that last year where BIGBANG won)......
Wiki is your friend, by the way.