An immediate effect of the end of the romanov dynasty in russia and the end of hapsburg reign in the austria-hungary was that they resulted in

The disolution of empires and autocratic monarchies and its dismemberment with new countries based on national culture.

Explanation:

The immediate effect of the end of both dynasties was the dissapearing of both empires and territorial dismemberment based on national cultures, since both empires ruled over a group of ethnic groups.

i believe the answer is a

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.