Who was constantine and why was he important

Who was Constantine? Constantine made Christianity the main religion of Rome, and created Constantinople, which became the most powerful city in the world. Emperor Constantine (ca A.D. 280– 337) reigned over a major transition in the Roman Empire—and much more.

Explanation:

answer: answer is (d)

explanation: it makes more sence than all the others and i know more stuff than you

yes based on alexanders actions he deserved the title of "the great". his empire covered about 3,000 miles and he was able to establish the empire over a 13 year period of time. he was able to conquer many different places. he also defeated the persians. he conquered egypt and developed a city and named it after himself.