Constantine, Rome's Fall, and the Rise of Islam's Impact on Christianity
This paper traces three pivotal episodes in the early history of Christianity. It begins with Constantine the Great's conversion following his victory at the Battle of the Milvian Bridge in A.D. 312, examining how a militarily pragmatic appeal to the Christian God transformed imperial religious policy. It then analyzes how the fall of the Western Roman Empire reshaped Christian identity, replacing civic Roman identity with a Roman Christian social vision that persisted through the Renaissance. Finally, it considers how theological fractures within Christianity — marked by heresy, intolerance, and internal division — contributed to the rapid Islamic expansion into Europe during the seventh century. Drawing on peer-reviewed scholarship, the paper offers a concise narrative of Christianity's formative political and cultural encounters.
- Constantine's Conversion and the Christian Empire: Constantine adopts Christianity after military victory in 312
- The Fall of the Western Empire and the Church's New Role: Church fills identity vacuum left by Rome's collapse
- Heretical Christianity and the Advent of Islam: Internal Christian divisions eased Islamic expansion into Europe
- Works Cited: Peer-reviewed sources cited in the paper
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What makes this paper effective
- Each section is anchored to a peer-reviewed source, giving the argument credibility despite its brevity.
- The paper traces a logical historical arc — from Constantine's conversion, through Rome's fall, to Islam's rise — creating a coherent narrative across three distinct episodes.
- Specific details (dates, battle names, page citations) ground broad historical claims in concrete evidence.
Key academic technique demonstrated
The paper demonstrates the use of targeted secondary scholarship to synthesize large historical developments into focused analytical paragraphs. Rather than surveying history broadly, each paragraph introduces a scholarly lens (Odahl on Constantine, Pohl on Roman identity, Lamoreaux on Christian-Islamic relations) and uses it to interpret causation and consequence — a useful model for history papers that must cover long periods concisely.
Structure breakdown
The paper is organized into three thematic sections, each roughly equal in length and each built around a single scholarly source. An introduction is embedded within the first section rather than standing separately. The Works Cited section follows MLA-adjacent formatting. The structure is straightforward: claim → evidence → interpretation, repeated across three historical turning points.
Constantine's Conversion and the Christian Empire
In the peer-reviewed Catholic Historical Review, author Charles Odahl explains that there was an "arduous military campaign" to regain control of Rome from "usurper Maxentius" in A.D. 312 — three hundred years after the death of Jesus Christ. The campaign was brutal, and so Constantine the Great sought "supernatural assistance" against the enemies of Rome (Odahl, 1995). Previous emperors had sought power and influence from "traditional pagan cults" and had persecuted the Christian Church, with little military success. Constantine was said to have invoked, through prayer, "the Highest God" of the universe to help his troops; and because he believed he had received an answer from the Christian God, he ordered the "caestia signa of Christ" — the Cross — placed on his troops' arms. Because Roman troops won the Battle of the Milvian Bridge on October 28, 312, that was enough to convince Constantine that the Christian God was on the side of the Romans.
Constantine did indeed become the first Christian emperor, but at the outset he knew very little about the "characteristics of the Christian Deity" or the sacraments and practices of the Christian Church (Odahl, p. 2). In time, however, he began reading Christian literature and summoned Christian clergy to his court, making "Christian ministers his advisors and traveling companions" (Odahl, p. 3). With Constantine's blessing and encouragement, Christian teacher Lactantius wrote a small book pointing to the "ultimate truth" and recognizing the "fallacy of pagan religions," arguing that there is "One Supreme God" and that God sent Christ to earth to bring salvation to all believers (Odahl, p. 3).
The Fall of the Western Empire and the Church's New Role
Scholar Walter Pohl writes in the peer-reviewed journal Early Medieval Europe that there were "many ways to be Roman" after the fall of the Western Empire, and as "imperial pretenses began to fade," those pretenses were "more or less smoothly replaced by a Roman Christian vision of social coherence" (Pohl, 2014). At the court of Emperor Antoninus Pius it was noted that after the fall, "Roman" was no longer merely the name of a city, but of a "common kin group" (Pohl, 412). Among that kin group were Christians who used ethnic metaphors to describe themselves as "new people, a kin group before God" (Pohl, 412).
Meanwhile, the rapidly expanding Christian ideology of Rome helped transform old modes of identifying cultures and "ancient gods" into a new mode instituted by "the apostles Peter and Paul" (Pohl, 414). When the Western Roman Empire dissolved, two powerful focal points remained, according to Pohl: the city of Rome, which had been "recharged by its Christian symbolic capital," and what Pohl calls "Byzantine Romanness" (Pohl, 416). For the remaining citizens after the fall — families who had identified as Roman for many generations — there remained a "weak identity," but they still had the Church, which carried deep meaning that was ultimately "recast" by the Renaissance (Pohl, 418).
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