Constantine the Great (; ; 27 February 272 AD – 22 May 337 AD), also known as Constantine I or Saint Constantine (in the Orthodox Church as Saint Constantine the Great, Equal-to-the-Apostles), was a Roman Emperor of Illyrian-Greek origin from 306 to 337 AD. He was the son of Flavius Valerius Constantius, a Roman Army officer, and his consort Helena. His father became "Caesar", the deputy emperor in the west, in 293 AD. Constantine was sent east, where he rose through the ranks to become a military tribune under Emperors Diocletian and Galerius. In 305, Constantius raised himself to the rank of "Augustus", senior western emperor, and Constantine was recalled west to campaign under his father in Britannia (Britain). Constantine was acclaimed as emperor by the army at Eboracum (modern-day York) after his father's death in 306 AD, and he emerged victorious in a series of civil wars against Emperors Maxentius and Licinius to become sole ruler of both west and east by 324 AD. 

As emperor, Constantine enacted many administrative, financial, social, and military reforms to strengthen the empire. The government was restructured, and the civil and military authorities were separated. A new gold coin was introduced to combat inflation known as the solidus. It became the standard for Byzantine and European currencies for more than a thousand years.

Answer the following questions:
1. who was emperor?
2. Who was his father?
3. When Did Constantine die?
4. What did Constantine become in 305?
5. When was Constantine declared Emperor?
6. What is the solidus?
7. Did he enact reforms as emperor?
8. When was Constantine emperor until?
9. How long was the solidus the standard currency?
10. Who was his mother?
11. What did his father become in 293 AD
12. Who acclaimed him as emperor?
13. Was he victorious against other Emperors?
14. Where was he sent?
15. What Emperors was he victorious against?
16. Did he enact military reforms?
17. Were the civil and military authorities combined?

Numbered answers:
1. Constantine the Great
2. Flavius Valerius Constantius
3. 22 May 337
4. rank of "Augustus"
5. 306 AD
6. gold coin
7. yes
8. 337 AD
9. more than a thousand years
10. Helena
11. "Caesar", the deputy emperor in the west
12. the army at Eboracum
13. yes
14. recalled west
15. Emperors Maxentius and Licinius
16. yes
17. no