Answer :
The right answer is D. Apart from the establishment of a common language, the repeated invasions of the Germanic tribes that led to the fall of the Roman Empire disrupted trade, led to a reduction in education.
Germanic culture predominated in the Roman Empire between the fourth and fifth centuries CE. While Germanic tribes continued to spread deeper into areas that had long been under the control of the Roman Empire, Germanic individuals held significant positions in the military and government. The Western Roman Empire was ultimately defeated by these forces in 476 CE, particularly the strength of the approaching Germanic tribes.
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