Answer:
Correct answer is B The growing influence of Germanic society and culture in Western civilization.
Step-by-step explanation:
A is not correct as Eastern Empire was established in 395 when the Empire was divided in two parts.
B is correct as Germanic tribes established number of states and their dominance in Western Europe.
C is not correct as Christianity started spreading after Edict of Milan in 313.
D is not correct as although it was a period of cultural decline it didn't led to total elimination of previous period.