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Study Guide: AP World History – South and Southeast Asia (Delhi Sultanate, Khmer Empire)
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AP World History – South and Southeast Asia (Delhi Sultanate, Khmer Empire)

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AP World History – South and Southeast Asia (Delhi Sultanate, Khmer Empire)

AP World History: South and Southeast Asia (Delhi Sultanate & Khmer Empire) – Exam-Ready Study Guide

What This Is

This topic covers two major medieval states in South and Southeast Asia: the Delhi Sultanate (Islamic rule in India, 1206–1526) and the Khmer Empire (Hindu-Buddhist empire in Cambodia, 802–1431). On the AP exam, you’ll need to analyze how these empires centralized power, interacted with religion, and influenced trade and culture. For example, the Delhi Sultanate’s jizya tax on non-Muslims shows how rulers balanced religious diversity, while the Khmer Empire’s Angkor Wat reflects Hindu-Buddhist syncretism and hydraulic engineering.


Key Terms & Concepts

  • Delhi Sultanate (1206–1526): A series of five Islamic dynasties that ruled northern India, marking the first major Muslim political presence in South Asia. Key feature: Blended Persian-Islamic administration with Indian traditions.
  • Sultan: Islamic ruler (e.g., Qutb-ud-din Aibak, founder of the Delhi Sultanate). Unlike caliphs, sultans did not claim religious authority.
  • Jizya: A tax imposed on non-Muslims (dhimmis) in Islamic states. Example: The Delhi Sultanate used it to fund the military while allowing Hindus to practice their faith.
  • Iqta System: A land-grant system where military officers (iqtadars) collected taxes in exchange for military service. Similar to European feudalism but more centralized.
  • Syncretism: The blending of religious or cultural traditions. Example: The Bhakti movement (Hindu devotionalism) and Sufi Islam (mystical Islam) influenced each other in India.
  • Khmer Empire (802–1431): A Hindu-Buddhist empire in Southeast Asia (modern Cambodia, Thailand, Laos, Vietnam) known for Angkor Wat and advanced hydraulic engineering.
  • Angkor Wat: A massive temple complex built by King Suryavarman II (12th century), originally a Hindu temple dedicated to Vishnu, later used by Buddhists. Symbolizes Khmer power and religious syncretism.
  • Barays: Massive reservoirs built by the Khmer to store water for irrigation and religious rituals. Example: The West Baray (5 miles long) helped sustain Angkor’s population.
  • Indian Ocean Trade Network: A maritime trade system connecting East Africa, the Middle East, South Asia, and Southeast Asia. Khmer Empire traded rice, spices, and exotic goods (e.g., ivory, silk).
  • Theravada Buddhism: A conservative branch of Buddhism dominant in Southeast Asia (e.g., Khmer Empire after the 12th century). Contrast with Mahayana Buddhism (China, Japan).
  • Decline of the Delhi Sultanate: Caused by Mongol invasions (14th century), internal rebellions, and the rise of the Vijayanagara Empire (Hindu resistance).
  • Decline of the Khmer Empire: Caused by environmental strain (deforestation, drought), Thai invasions (Ayutthaya Kingdom), and shifting trade routes.

Step-by-Step: How to Analyze These Empires on the AP Exam

  1. Identify the Empire & Time Period
  2. Delhi Sultanate: 1206–1526 (Islamic rule in India).
  3. Khmer Empire: 802–1431 (Hindu-Buddhist rule in Southeast Asia).

  4. Compare Political Structures

  5. Delhi Sultanate: Centralized Islamic rule with sultans, iqta system, and Persian bureaucracy.
  6. Khmer Empire: Divine kingship (devaraja) where rulers were seen as gods (Hindu/Buddhist).

  7. Analyze Religious Policies

  8. Delhi Sultanate: Jizya tax on non-Muslims but allowed Hindu temples (e.g., Qutb Minar built near a Hindu temple).
  9. Khmer Empire: Syncretism—Angkor Wat started Hindu but became Buddhist.

  10. Evaluate Economic & Technological Innovations

  11. Delhi Sultanate: Urbanization (Delhi became a major city), textile production, and Indian Ocean trade.
  12. Khmer Empire: Hydraulic engineering (barays, canals) to support agriculture.

  13. Assess Decline Factors

  14. Delhi Sultanate: Mongol invasions, internal rebellions, rise of regional powers (e.g., Vijayanagara).
  15. Khmer Empire: Environmental collapse, Thai invasions, shift in trade routes.

  16. Connect to Broader Themes

  17. State-building: How did these empires centralize power?
  18. Cultural diffusion: How did Islam/Hinduism/Buddhism spread?
  19. Economic systems: How did trade shape their societies?

Common Mistakes

  • Mistake: Assuming the Delhi Sultanate was a single dynasty. Correction: It was five dynasties (Mamluk, Khalji, Tughlaq, Sayyid, Lodi). The Tughlaq Dynasty (14th century) was the most expansionist.

  • Mistake: Thinking the Khmer Empire was always Buddhist. Correction: It started Hindu (Angkor Wat was built for Vishnu) but shifted to Theravada Buddhism by the 12th–13th centuries.

  • Mistake: Confusing the jizya tax with forced conversion. Correction: The jizya was a tax, not a requirement to convert. Many Hindus paid it to keep their faith.

  • Mistake: Overlooking the environmental causes of the Khmer Empire’s decline. Correction: Deforestation, drought, and overuse of barays weakened the empire before Thai invasions.

  • Mistake: Forgetting the Delhi Sultanate’s impact on later Mughal rule. Correction: The Sultanate laid the foundation for Mughal administration (e.g., land revenue systems).


AP Exam Insights

Frequently Tested: - Comparison FRQs: Compare the Delhi Sultanate’s religious policies with the Khmer Empire’s syncretism. - DBQs: Documents might include traveler accounts (Ibn Battuta), temple inscriptions, or tax records. - Multiple-Choice Traps: - "The Delhi Sultanate was a caliphate"-False! It was a sultanate (no religious authority). - "Angkor Wat was always a Buddhist temple"-False! It started Hindu.

Tricky Distinctions: - Delhi Sultanate vs. Mughal Empire: The Sultanate was Turkic/Persian, while the Mughals were Mongol-Turkic (Babur’s lineage). - Theravada vs. Mahayana Buddhism: Khmer Empire shifted to Theravada (more conservative), while Mahayana dominated in China/Japan.


Quick Check Questions

  1. Which of the following best describes the religious policy of the Delhi Sultanate toward Hindus? a) Forced conversion to Islam b) Complete religious tolerance with no taxes c) A tax (jizya) on non-Muslims but allowed Hindu practice d) Banned all Hindu temples Answer: C-The jizya tax was imposed, but Hindus could still practice their faith.

  2. The construction of Angkor Wat in the Khmer Empire best reflects which of the following? a) The empire’s rejection of Hinduism in favor of Buddhism b) The syncretism of Hindu and Buddhist traditions c) The influence of Chinese Confucianism d) The empire’s focus on maritime trade over agriculture Answer: B-Angkor Wat was originally Hindu but later used by Buddhists, showing syncretism.

  3. Short FRQ: "Evaluate the extent to which environmental factors contributed to the decline of the Khmer Empire." Possible Answer: Environmental factors like deforestation, drought, and overuse of barays weakened the Khmer Empire’s agricultural base, making it vulnerable to Thai invasions and economic decline.


Last-Minute Cram Sheet

  1. Delhi Sultanate (1206–1526): Islamic rule in India, jizya tax, iqta system, Tughlaq Dynasty expanded but declined due to Mongols.
  2. Khmer Empire (802–1431): Hindu-Buddhist, Angkor Wat, barays (reservoirs), declined due to environmental strain & Thai invasions.
  3. Syncretism: Blending of religions (e.g., Bhakti-Sufi movements, Angkor Wat’s Hindu-Buddhist shift).
  4. Jizya: Tax on non-Muslims in Islamic states (Delhi Sultanate).
  5. Devaraja: Khmer concept of god-kings (rulers as divine).
  6. Indian Ocean Trade: Khmer traded rice, spices; Delhi Sultanate traded textiles.
  7. Delhi Sultanate-Mughal Empire (Mughals came later, 1526).
  8. Angkor Wat started Hindu, became Buddhist (syncretism!).
  9. Decline of Delhi Sultanate: Mongols, internal rebellions, rise of Vijayanagara (Hindu resistance).
  10. Decline of Khmer Empire: Drought, deforestation, Thai invasions (Ayutthaya).

Good luck—you’ve got this! ?