Land-Based Empires
What this unit covers
The topics below follow the published World History course framework for Unit 3. This unit is worth 12–15% of the exam, so budget your time against that rather than against how long the unit takes to teach.
Lessons in this unit
- The Gunpowder Empires Expand14 min · 3 objectivesIdentify the major land-based empires that expanded between 1450 and 1750 · Explain how gunpowder weaponry enabled imperial expansion · Compare the roles of military conquest and religion in imperial growth
- Administering the Land Empires14 min · 3 objectivesExplain methods land-based empires used to centralize and administer power · Analyze how tax systems and elite service classes strengthened the state · Compare bureaucratic and military-service approaches to imperial administration
- Belief Systems and Legitimizing Power13 min · 3 objectivesExplain how rulers used religion and art to legitimize their authority · Analyze religious developments and tensions within the land-based empires · Compare strategies of legitimation across Afro-Eurasian empires
Every term in Unit 3
All 13 terms we publish for Land-Based Empires, with definitions. Reading them through is the fastest way to find the ones you cannot define — then drill those in cram mode until you can produce them without the prompt.
- Gunpowder empires
- Ottoman, Safavid, Mughal and Qing — states whose expansion and centralization rested on artillery and firearms monopolized by the ruler.
- Devshirme and janissaries
- Ottoman levy of Christian boys converted, educated and made into an elite standing army loyal to the sultan alone rather than to any noble family.
- Ottoman Empire
- Ruled from Constantinople after 1453, using the devshirme and janissaries and administering religious minorities through the millet system.
- Millet system
- Ottoman practice of letting religious communities govern their own civil affairs under their own leaders — pragmatic tolerance that eased rule over a diverse empire.
- Safavid Empire
- Persian empire that made Twelver Shi'ism the state religion, creating a lasting Sunni-Shia fault line with the Ottomans to its west.
- Mughal Empire
- Muslim dynasty ruling a Hindu-majority India. Akbar governed by conciliation, abolishing the jizya; Aurangzeb reversed this and provoked revolt.
- Akbar
- Mughal ruler who ended the jizya, married into Rajput families, and sponsored religious debate — legitimacy through inclusion rather than conquest alone.
- Qing dynasty
- Manchu rulers of China who kept the Confucian bureaucracy while enforcing Manchu identity, notably through the required queue hairstyle.
- Methods of legitimizing rule
- Monumental architecture, religious authority, tax and bureaucratic systems, and art patronage — the CED's comparative frame for this unit.
- Tax farming
- Selling the right to collect taxes. Gave rulers immediate revenue while abusive collectors ate the long-term legitimacy of the state.
- Divine right and the Mandate of Heaven
- European monarchs claimed authority from God directly; Chinese emperors held a mandate that could be withdrawn, making rebellion evidence of forfeiture.
- Sunni-Shia split in practice
- Ottoman-Safavid rivalry turned a theological division into a durable geopolitical border shaping Middle Eastern politics ever since.
- Russian expansion under the tsars
- Eastward conquest across Siberia and a nobility bound to the state, with serfdom deepening as western Europe's was disappearing.
What examiners penalize here
- Administration questions reward the *logic* of control: rulers wanted elites who depended on **the state** rather than on **birth or land**. Devshirme, civil-service exams, and controlled tax systems all serve this aim. Explain the loyalty mechanism, not just the name.
Practice World History
Our practice bank is drawn from across the whole course rather than filtered to one unit, which is closer to how the exam asks anyway — it will not tell you which unit a question is testing.
Questions about this unit
How much of the AP World History: Modern exam is Unit 3?
Unit 3, Land-Based Empires, is worth 12–15% of the World History multiple-choice section according to the published course framework. Across all 9 units that makes it a substantial share — heavier than an even split would give it.
What topics are covered in World History Unit 3?
Land-Based Empires covers Gunpowder empires, Administration, Belief systems and Legitimacy. We publish 13 terms with definitions for this unit, all of them on this page.
How should I study World History Unit 3?
Read the 3 lessons below first — about 40 minutes — then drill the 13 terms in cram mode until you can produce each definition from memory rather than just recognize it. Recognition is what makes a unit feel finished when it is not. Finish with practice questions and read the explanation for every one you get right by elimination as well as the ones you miss.
All 9 units of AP World History: Modern
Unit names, topics and exam weights follow the published College Board course framework for AP World History: Modern. AP® is a trademark registered by the College Board, which does not endorse this site.