Answer:
Four common causes, as recognized by social scientists, are technology, social institutions, population, and the environment. All four of these areas can impact when and how society changes. And they are all interrelated: a change in one area can lead to changes throughout
Answer:
B. He granted freedom of religion in the Roman Empire is your best answer.
Explanation:
A is just one of the results occuring after he ended the persecution of Christians.
For C, he did not "introduce" Christianity, but he legalized it and made it the official religion of the Roman Empire.
For D, the Roman Empire was already a pagan empire, and Constantine made it a Christian Empire.
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