By 380 CE, Christianity was the official religion of D. the Roman empire.
<h3>What is Christianity?</h3>
It should be noted that Christianity are the followers of Christ and those who practice the religion.
In this case, by 380 CE, Christianity was the official religion of the Roman empire.
In conclusion, the correct option is D.
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C) treaty of versailles
bc it ended ww1 not 2 (might have caused ww2 though)
Answer: Improvements in agriculture.
Explanation:
Answer: An ecumenical council is a conference of ecclesiastical dignitaries and theological experts convened to discuss and settle matters of Church doctrine and practice in which those entitled to vote are convoked from the whole world and which secures the approbation of the whole Church.
The answer to this question is b