Answer:
Correct answer is D) Roman Empire
Explanation:
D is the correct answer as with the fall of Western Roman Empire feudalism started developing in Europe. Roman Empire ended it 476.
A is not correct as Byzantine Empire existed until 1453, and was a feudal state also.
B is not correct as Ottomans came in Europe in 14th century, destroyed Byzantine empire and also adapted themselves to feudal system.
C is not correct as Mughal Empire was in Asia, not Europe.