Ancient Rome and Christianity 509BC-476AD
History

An ordained, consecrated, or appointed member of the Christian clergy
Bishop
An ordained, consecrated, or appointed member of the Christian clergy. Bishop. In history, a bishop is a high-ranking church leader responsible for overseeing multiple congregations and guiding spiritual and administrative affairs.

A procedure of systematically acquiring information about the members of a given population
Census
A procedure of systematically acquiring information about the members of a given population. Census. In history, a census is a count of people living in a region, used to gather information for government purposes.

A general and Roman emperor who made Byzantium capital of the Roman Empire
Constantine
A general and Roman emperor who made Byzantium the capital of the Roman Empire, Constantine. Constantine is known for founding the city of Constantinople and making Christianity a major religion in the Roman Empire.

The ancient city of Byzantium which became the capital of the Roman Empire by Constantine
Constantinople
The ancient city of Byzantium which became the capital of the Roman Empire by Constantine. Constantinople. Constantinople is the historic city that was the capital of the Byzantine Empire and later the Ottoman Empire, now known as Istanbul.

A Roman emperor known for ending the period known as the Crisis of the Third Century
Diocletian
A Roman emperor known for ending the period known as the Crisis of the Third Century. Diocletian. Diocletian was a Roman leader who stabilized the empire by implementing reforms and dividing it for better governance.

The use of scientific principles to design and build machines, structures, and other items
Engineering
The use of scientific principles to design and build machines, structures, and other items. Engineering. Throughout history, engineering has been about solving practical problems to improve human life.

A statesman and military general who played a critical role in the rise of the Roman Empire
Julius Caesar
A statesman and military general who played a critical role in the rise of the Roman Empire. Julius Caesar. Julius Caesar was a Roman leader who expanded the empire and became its dictator before being assassinated.

An artistic picture or design made out of pieces of stone or glass assembled together
Mosaic
An artistic picture or design made out of pieces of stone or glass assembled together. Mosaic. Mosaic is an art form used since ancient times to create detailed images, often seen in Roman and Byzantine architecture.

A high-ranking bishop in certain Orthodox and Catholic churches
Patriarch
A high-ranking bishop in certain Orthodox and Catholic churches. Patriarch. In history, a patriarch is a senior religious leader who oversees large regions and communities in Eastern Orthodox, Oriental Orthodox, and some Catholic churches.