UPSC Notes / Medieval Indian History / Chapter 22
Chapter 22 of 24

Decline of the Mughal Empire

Aurangzeb's over-extension, weak successors, Nadir Shah's invasion, and the gradual fragmentation that left the empire a shadow of its former self.

📖 ~13 min read 🕌 Medieval Indian History

Introduction

The Mughal Empire's dramatic decline — from the largest and wealthiest state in the world under Aurangzeb to a shadow controlling little beyond Delhi within a few decades of his death — resulted from a combination of structural weaknesses, weak leadership, external invasions, and the rise of regional successor states.

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Image space — add illustration here
Suggested: A depiction of Nadir Shah's sack of Delhi (1739) or the empty Peacock Throne
Suggested visual: Nadir Shah's invasion of Delhi, 1739

Causes of Decline

Flowchart — Interlinked Causes of Mughal Decline
Aurangzeb's Deccan over-extension (25+ years of costly campaigning)
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Financial exhaustion — treasury drained, Jagirdari crisis (too few jagirs for too many claimants)
Weak, short-reigned successors after Aurangzeb (1707 onward), frequent succession wars
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Rise of powerful regional/provincial governors acting increasingly independently
External invasions (Nadir Shah, Ahmad Shah Abdali) further weakening central authority

The Jagirdari Crisis

As the empire expanded (especially under Aurangzeb), the number of Mansabdars/nobles requiring Jagir assignments grew faster than the available revenue-yielding land — creating intense competition and instability among the nobility, and encouraging short-term revenue extraction over long-term agricultural investment in many jagirs.

Weak Later Mughals

RulerReignNote
Bahadur Shah I1707-1712Relatively capable, but reign too short to reverse structural decline
Jahandar Shah, Farrukhsiyar, and others1712-1719Rapid, chaotic succession; nobles (notably the "Sayyid Brothers") effectively became kingmakers
Muhammad Shah "Rangeela"1719-1748Long but largely ineffective reign; empire's territorial and financial decline accelerated significantly, including the loss of the Deccan (Nizam) and the devastating Nadir Shah invasion

Nadir Shah's Invasion (1739 CE)

⚖️ Devastating Blow: The Persian ruler Nadir Shah invaded Delhi in 1739, decisively defeating the Mughal army, and thoroughly plundered the capital — famously carrying away the Peacock Throne and the Kohinoor diamond. This catastrophic loss of wealth and prestige is often cited as marking the point beyond which genuine Mughal imperial recovery became effectively impossible.

Further weakening came from repeated invasions by Ahmad Shah Abdali of Afghanistan through the 1750s-60s, whose campaigns also precipitated the Third Battle of Panipat (1761) against the Marathas.

Fragmentation into Successor States

By the mid-18th century, effective Mughal authority had shrunk to little beyond Delhi and its immediate surroundings, while powerful regional successor states — Bengal, Awadh, Hyderabad, and the Maratha Confederacy, among others — exercised de facto independent rule, even while nominally acknowledging Mughal suzerainty. This fragmentation set the stage for British East India Company expansion (covered in the next chapter and in the Modern History series).

✅ UPSC Focus: Jagirdari crisis as a structural cause of decline · Aurangzeb's Deccan wars as a major drain · Nadir Shah's 1739 invasion and the Peacock Throne/Kohinoor loss · Sequence of weak later Mughal rulers · Link to the rise of regional successor states.

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