Studio Aletheia · World Builders Academy
6.2.CESC 6th Grade World Civilizations
Rome's Eastern Heir
Lesson 3.2 · The Byzantine Empire I, Constantinople and the Roman East
Rome never really fell everywhere at once. While the western half of the empire fractured into new kingdoms, its eastern half kept calling itself Roman for another thousand years from a new capital: Constantinople. Today you meet the empire historians call Byzantine, and the crisis that pushed Rome's center of gravity east in the first place.
Learning Targets and Success Criteria
Build the vocabulary and evidence needed to meet standard 6.2.CE.
What I will learn
- I can explain why the Roman Empire's political center shifted eastward.
- I can describe the Crisis of the Third Century and how emperors tried to solve it.
- I can explain why Constantinople was a strategic location for a capital city.
- I can distinguish the Byzantine Empire from the western kingdoms that replaced Rome.
What success looks like
- I list at least two problems the Roman Empire faced during the Crisis of the Third Century.
- I explain Diocletian's tetrarchy in my own words.
- I describe one geographic advantage of Constantinople's location.
- My exit ticket uses the word Byzantine accurately.
Explain the impact of global exchanges among world civilizations.
How one empire's capital moved east and outlasted the empire's own name for it.
These terms will be used throughout the mini-lesson, evidence lab, hands-on activity, journal, and exit challenge.
Byzantine Empire
The name historians use for the eastern Roman Empire after the fall of Rome's western half; its people continued to call themselves Romans.
Crisis of the Third Century
A roughly fifty-year period, from 235 to 284 CE, of civil war, economic collapse, and rapid turnover of Roman emperors.
Tetrarchy
A system devised by the emperor Diocletian in which four rulers, two senior and two junior, shared control of the Roman Empire.
Constantinople
The city founded by the emperor Constantine as a new eastern capital, strategically located to control trade between Europe and Asia.
Where this shows up in the real world.
History is not just something that happened. It is training for how you will read evidence, weigh sources, and make decisions in a career.
Choosing Where Power Sits
City planners still study why Constantinople's location, controlling a narrow strait between two seas and two continents, made it nearly impossible to conquer and easy to defend and supply.
Stabilizing an Economy in Crisis
Diocletian's edicts to fix prices and stabilize Roman coinage are early examples of the problem central bankers and economists still manage today: what happens when a currency loses public trust.
An Empire in Crisis Finds a New Center
Fifty years of civil war convinced Roman emperors that ruling from Italy alone was no longer enough.
From 235 to 284 CE, the Roman Empire endured what historians call the Crisis of the Third Century: a fifty-year stretch in which more than two dozen different men claimed the imperial throne, usually with the backing of their own troops rather than any legal process. Civil wars became nearly constant, the government devalued its currency to pay for them, and prices for ordinary goods spiraled upward. The empire that had once seemed permanent began to look fragile.
In 284, an official named Diocletian took the throne and tried something no emperor had attempted before: dividing the job. He created a tetrarchy, a rule of four, splitting authority between two senior emperors called augusti and two junior emperors called caesars, each responsible for defending a different region near the empire's borders. Diocletian also attacked the economic side of the crisis directly, issuing the Edict on Maximum Prices in 301 to cap what merchants could charge and to stabilize the value of Roman coins. The tetrarchy did not survive Diocletian's own retirement, and civil war returned within a few years, but it proved a lasting point: one man ruling the entire empire from one city was no longer realistic.
The eventual winner of that renewed civil war, Constantine, made the empire's eastward shift permanent. He founded a new capital on the site of the old Greek city of Byzantium, at the meeting point of the Black Sea and the Mediterranean, and named it after himself: Constantinople. The location was nearly impossible to besiege, easy to supply by sea, and perfectly placed to tax and control trade moving between Europe and Asia. Constantine also embraced Christianity, a decision that would reshape not only Roman religion but Roman law, art, and politics for centuries. The western half of the empire would collapse within two hundred years, but the eastern half, ruled from Constantinople, would endure as what historians now call the Byzantine Empire, its people insisting to the very end that they were still Romans.
Adapted from Studio Aletheia's World Builders Academy curriculum library, drawing on classical and medieval world history resources on the Byzantine Empire and Late Antiquity.
Materials for the evidence lab.
- A. Evidence Cards, provided
- B. Highlighters, 2 colors minimum
- C. Chart paper or notebook paper
- D. A pencil for mapping
- E. Your Evidence Log
Every session: identify the evidence, cite where it came from, connect it to the day's vocabulary, write a one-paragraph explanation.
Read the Map
Constantinople's location was its greatest asset. Examine the reasoning behind that claim.
Diagram the Divided Empire
Before Constantinople became a permanent capital, Diocletian tried to solve Rome's crisis by dividing power.
Evidence Log
Accountability Checklist
Exit Challenge
Was the founding of Constantinople more of a defensive decision, an economic decision, or a religious decision? Choose one and defend it with evidence from today's reading.