What is the principal crop for east asian nations?
rice
wheat
corn
barley

The principle crop raised in East Asia is rice!
In fact, some scientists suggest that the very specifics of rise farming is what has caused the cultures in East Asia to be collectivist: growing rice is only possible with human cooperation (much more than growing wheat) and it forced people to cooperate better. 

This is what i found “getting into the technicalities, the continental crust has a density of around 3.0 g/cm3 compared to 2.6 g/cm3 of the continental crust. in addition, the continental crust is much thicker than the oceanic crust. the recycling process does not happen to the continental layer.” i hope this you for what your looking for. can you plz mark me brainliest?

Ashould be answer.