Which of the following did NOT lead to the collapse of the Romanov dynasty?

well that depends on how deep the hole is. you'd first go through te crust of the earth, then the upper mantle, then the lower mantle then the outer core, then the inner cor then you'd be stuck in the core to melt.

the quran was sent by an angel to muhhamad   which made up the quran they beiliev that there is on   god who controls everything and they believ every prophet lived jesus and the jews prophet

the viking voyages took place during the middle ages, which was about this time. 500 to 1350. the viking voyages took place during the middle ages, which was about this time.