IMHO, eurasia as continent make more sence... but it an other case of politics being more important that geography.
europe, is seperated from asia by water (at turkey)and by moutains (the ural's in russia) but more importantly, it is seperated by language group (latin got a lot of words from greek, and then became the basis for many of the europian language groups-- and philosophy--most fundimentally, religious philosophy.
So when european scholars divided the world into oceans and continents (and europeans ended up doing this, because christianity edged out muslim thought, and became the domaniant philosophy of learning -- (for a while, the muslem world lead in learning.. -- and for several reasons, they backed away from advanced learning (most of math and science of today is a christian continuation of arab and indian learning,) so these learned men wanted to have europe as a seperate continent from asia..
So Europe became a continient, not because its was such a different land mass, but because it wanted to seperate itself from 'eastern'(asian) thinking.
subcontinent
