Constantine's accomplishments were making Christianity the official religion of the empire & founding Constantinople (Istanbul).
Constantinople
Constantinople was in Greece.
The use of Mosaics (glass collages) In both public and religious buildings. The most famous Byzantine building is the Hagia Sophia, a domed church built during the reign of Justinian and Constantinople.
The ancient city of Constantinople has morphed into Istanbul.The ancient city of Constantinople has morphed into Istanbul.The ancient city of Constantinople has morphed into Istanbul.The ancient city of Constantinople has morphed into Istanbul.The ancient city of Constantinople has morphed into Istanbul.The ancient city of Constantinople has morphed into Istanbul.The ancient city of Constantinople has morphed into Istanbul.The ancient city of Constantinople has morphed into Istanbul.The ancient city of Constantinople has morphed into Istanbul.
constantinople was not a religion but a city.
I think I will travel to Constantinople.
Constantinople
Constantinople is a town in southern Chile.
The Ecumenical Patriarch (in Constantinople).
Socrates of Constantinople was born in 380.
The conquest of Constantinople