Constantine the Great and Christianity in the context of "Legacy of the Roman Empire"

Constantine I (27 February 272 – 22 May 337), also known as Constantine the Great, or known mononymously as Constantine, was Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity. He played a pivotal role in elevating the status of Christianity in Rome, the Edict of Milan decriminalising Christian practice and ceasing Christian persecution. This was a turning point in the Christianisation of the Roman Empire. He founded the city of Constantinople (now Istanbul) and made it the capital of the Empire, which it remained for over a millennium.

Born in Naissus, a city located in the province of Moesia Superior (now Niš, Serbia), Constantine was the son of Flavius Constantius, a Roman army officer from Moesia Superior, who would become one of the four emperors of the Tetrarchy. His mother, Helena, was a woman of low birth, probably from Bithynia. Later canonised as a saint, she is credited for the conversion of her son in some traditions, though others believe that Constantine converted her. He served with distinction under emperors Diocletian and Galerius. He began his career by campaigning in the eastern provinces against the Persians, before being recalled to the west in AD 305 to fight with his father in the province of Britannia. After his father's death in 306, Constantine was proclaimed as augustus (emperor) by his army at Eboracum (York, England). He eventually emerged victorious in Civil wars of the Tetrarchy against the emperors Maxentius and Licinius to become the sole ruler of the Roman Empire by 324.

In ancient Roman religion and mythology, Jupiter (Latin: Iūpiter or Iuppiter, from Proto-Italic *djous "day, sky" + *patēr "father", thus "sky father" Greek: Δίας or Ζεύς), also known as Jove (nom. and gen. Iovis [ˈjɔwɪs]), is the god of the sky and thunder, and king of the gods. Jupiter was the chief deity of Roman state religion throughout the Republican and Imperial eras, until Christianity became the dominant religion of the Empire. In Roman mythology, he negotiates with Numa Pompilius, the second king of Rome, to establish principles of Roman religion such as offering, or sacrifice.

Jupiter is thought to have originated as a sky god. His identifying implement is the thunderbolt and his primary sacred animal is the eagle, which held precedence over other birds in the taking of auspices and became one of the most common symbols of the Roman army (see Aquila). The two emblems were often combined to represent the god in the form of an eagle holding in its claws a thunderbolt, frequently seen on Greek and Roman coins. As the sky god, he was a divine witness to oaths, the sacred trust on which justice and good government depend. Many of his functions were focused on the Capitoline Hill, where the citadel was located. In the Capitoline Triad, he was the central guardian of the state with Juno and Minerva. His sacred tree was the oak.

Ancient Egyptian art refers to art produced in ancient Egypt between the 6th millennium BC and the 4th century AD, spanning from Prehistoric Egypt until the Christianization of Roman Egypt. It includes paintings, sculptures, drawings on papyrus, faience, jewelry, ivories, architecture, and other art media. It was a conservative tradition whose style changed very little over time. Much of the surviving examples comes from tombs and monuments, giving insight into the ancient Egyptian afterlife beliefs.

The ancient Egyptian language had no word for "art". Artworks served an essentially functional purpose that was bound with religion and ideology. To render a subject in art was to grant it permanence; thus, ancient Egyptian art portrayed an idealized and unrealistic version of the world. There was no significant tradition of individual artistic expression since art served a wider and cosmic purpose of maintaining order (Ma'at).

The 4th century was the time period from 301 CE (represented by the Roman numerals CCCI) to 400 CE (CD) in accordance with the Julian calendar. In the West, the early part of the century was shaped by Constantine the Great, who became the first Roman emperor to adopt Christianity. Gaining sole reign of the empire, he is also noted for re-establishing a single imperial capital, choosing the site of ancient Byzantium in 330 (over the current capitals, which had effectively been changed by Diocletian's reforms to Milan in the West, and Nicomedeia in the East) to build the city soon called Nova Roma (New Rome); it was later renamed Constantinople in his honor.

The last emperor to control both the eastern and western halves of the empire was Theodosius I. As the century progressed after his death, it became increasingly apparent that the empire had changed in many ways since the time of Augustus. The two-emperor system originally established by Diocletian in the previous century fell into regular practice, and the east continued to grow in importance as a centre of trade and imperial power, while Rome itself diminished greatly in importance due to its location far from potential trouble spots, like Central Europe and the East. Late in the century Christianity became the official state religion, and the empire's old pagan culture began to disappear. General prosperity was felt throughout this period, but recurring invasions by Germanic tribes plagued the empire from 376 CE onward. These early invasions marked the beginning of the end for the Western Roman Empire.

The region of Palestine is part of the wider region of the Levant, which represents the land bridge between Africa and Eurasia. The areas of the Levant traditionally serve as the "crossroads of Western Asia, the Eastern Mediterranean, and Northeast Africa", and in tectonic terms are located in the "northwest of the Arabian Plate". Palestine itself was among the earliest regions to see human habitation, agricultural communities and civilization. Because of its location, it has historically been seen as a crossroads for religion, culture, commerce, and politics. In the Bronze Age, the Canaanites established city-states influenced by surrounding civilizations, among them Egypt, which ruled the area in the Late Bronze Age. During the Iron Age, two related Israelite kingdoms, Israel and Judah, controlled much of Palestine, while the Philistines occupied its southern coast. The Assyrians conquered the region in the 8th century BCE, then the Babylonians c. 601 BCE, followed by the Persian Achaemenid Empire that conquered the Babylonian Empire in 539 BCE. Alexander the Great conquered the Persian Empire in the late 330s BCE, beginning Hellenization.

In the late 2nd-century BCE Maccabean Revolt, the Jewish Hasmonean Kingdom conquered most of Palestine; the kingdom subsequently became a vassal of Rome, which annexed it in 63 BCE. Roman Judea was troubled by Jewish revolts in 66 CE, so Rome destroyed Jerusalem and the Second Jewish Temple in 70 CE. In the 4th century, as the Roman Empire adopted Christianity, Palestine became a center for the religion, attracting pilgrims, monks and scholars. Following Muslim conquest of the Levant in 636–641, ruling dynasties succeeded each other: the Rashiduns; Umayyads; Abbasids; the semi-independent Tulunids and Ikhshidids; Fatimids; and the Seljuks. In 1099, the First Crusade resulted in Crusaders establishing of the Kingdom of Jerusalem, which was reconquered by the Ayyubid Sultanate in 1187. Following the invasion of the Mongol Empire in the late 1250s, the Egyptian Mamluks reunified Palestine under its control, before the region was conquered by the Ottoman Empire in 1516, being ruled as Ottoman Syria until the 20th century largely without dispute.