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British Conquest of India — TNPSC Group 4 History Notes

TNPSC Group 4 History notes on British conquest: Battle of Plassey, Buxar, Subsidiary Alliance, Doctrine of Lapse, and annexation policies.

Updated 27 May 20265 min read

Overview

The British East India Company arrived in India as traders but gradually transformed into rulers over nearly 200 years (1600–1858). The conquest of India was carried out through a combination of military battles, diplomatic manipulation, and deliberately imposed policies that stripped Indian rulers of power and territory. Understanding this process is essential for TNPSC Group 4, as questions on British expansion appear regularly in General Studies Paper I.

Arrival of the East India Company

The British East India Company was founded in 1600 by a royal charter from Queen Elizabeth I. It established its first trading post at Surat in 1608 and gradually set up factories (trading posts) at Bombay (1668), Madras (Fort St. George, 1640), and Calcutta (Fort William, 1690).

Initially, the Portuguese, Dutch, and French all competed with the British for Indian trade. The defeat of the Portuguese at the Battle of Swally (1612) and the gradual weakening of the Dutch established British supremacy in Indian seas. The French, their last serious European competitor, were decisively defeated in the Carnatic Wars (1746–1763).

The Battle of Plassey (1757)

The Battle of Plassey is a turning point in Indian history — it transformed the Company from a trader to a territorial power.

Background: Siraj ud-Daulah, the young Nawab of Bengal, threatened the Company's fortifications at Calcutta and captured the city. The infamous Black Hole of Calcutta incident (1756), whether exaggerated or not, gave the British a pretext for military action.

The Battle: Robert Clive conspired with Mir Jafar (Siraj's commander-in-chief) to betray the Nawab. On 23 June 1757, Mir Jafar's forces stood aside during the battle, and Siraj ud-Daulah was defeated and later killed. Mir Jafar became the puppet Nawab, and the Company gained enormous wealth and trading privileges.

Significance: The British now controlled Bengal, India's richest province. The wealth extracted from Bengal funded future British expansion across India.

The Battle of Buxar (1764) and Treaty of Allahabad

Mir Qasim (who replaced Mir Jafar) proved more independent and resisted Company interference. This led to the Battle of Buxar (22 October 1764), where British forces under Hector Munro defeated the combined armies of:

  • Mir Qasim (Nawab of Bengal)
  • Shuja ud-Daulah (Nawab of Awadh)
  • Shah Alam II (Mughal Emperor)

The Treaty of Allahabad (1765) that followed was far more important than Plassey. The Company received the Diwani (revenue collection rights) of Bengal, Bihar, and Orissa from Shah Alam II. This gave the British massive financial resources and effective control over one-third of India.

Expansion Policies

The British used several systematic policies to expand territorial control:

Subsidiary Alliance (Lord Wellesley, 1798–1805)

Under the Subsidiary Alliance:

  • Indian rulers had to accept British troops stationed in their territory
  • The ruler paid the cost of maintaining these troops
  • The ruler surrendered the right to maintain independent foreign relations
  • In return, the British "protected" the ruler from enemies

If a ruler could not pay, he had to give territory. The system created permanent financial dependency. Key states absorbed through Subsidiary Alliance: Hyderabad (1798), Mysore (1799), Awadh (1801), Maratha chiefs (1802–1803).

Doctrine of Lapse (Lord Dalhousie, 1848–1856)

Dalhousie's most controversial policy: if a ruler died without a natural male heir, the state was annexed. Adopted sons were not recognised.

State AnnexedYear
Satara1848
Jaipur, Sambalpur1849
Udaipur1852
Jhansi1853
Nagpur1854
Awadh (misgovernance)1856

The annexation of Jhansi made Lakshmi Bai a central figure in the Revolt of 1857. The annexation of Awadh angered the sepoys, many of whom came from Awadh, directly contributing to the revolt.

Anglo-Mysore Wars

WarYearsRulerResult
First1767–69Hyder AliMadras Treaty — British humiliated
Second1780–84Hyder Ali / Tipu SultanInconclusive
Third1790–92Tipu SultanTreaty of Seringapatam — Tipu lost half his territory
Fourth1799Tipu SultanTipu died defending Srirangapatna; Mysore annexed

Tipu Sultan is remembered as a fierce opponent of the British. He introduced iron-cased rockets in warfare and sought alliances with France and Afghanistan to resist the British.

Anglo-Maratha Wars

The Maratha Confederacy (Peshwas, Sindhia, Holkar, Bhonsle, Gaekwad) was the most powerful Indian power in the 18th century. Three wars were fought:

  • First Anglo-Maratha War (1775–82): Treaty of Salbai — inconclusive
  • Second Anglo-Maratha War (1803–05): Wellesley defeated Sindhia and Bhonsle; British gained Delhi and Agra
  • Third Anglo-Maratha War (1817–18): Peshwa Baji Rao II defeated; Maratha power ended completely

Important for Exam - Battle of Plassey = 1757; Robert Clive; Mir Jafar betrayed Siraj ud-Daulah - Battle of Buxar = 1764; more decisive than Plassey; Treaty of Allahabad → Diwani rights - Subsidiary Alliance = Lord Wellesley's policy (1798–1805) - Doctrine of Lapse = Lord Dalhousie; Jhansi (1853), Nagpur (1854) - Tipu Sultan died at Srirangapatna in 1799 (Fourth Anglo-Mysore War) - Company's first trading post in India: Surat (1608)

Previous Year TNPSC Questions

Click an option to reveal the answer and explanation.

Q1

The Battle of Plassey (1757) was fought between?

Q2

After the Battle of Buxar (1764), the British gained Diwani rights over?

Q3

The "Doctrine of Lapse" was introduced by?

Q4

Which of the following states was NOT annexed under the Doctrine of Lapse?

Q5

The Subsidiary Alliance system was introduced by?

Q6

The Government of India Act 1858 transferred power from?

Frequently Asked Questions

The Battle of Plassey (1757) was fought between Robert Clive of the East India Company and Siraj ud-Daulah, the Nawab of Bengal. Clive's victory — aided by the treachery of Mir Jafar — gave the British control over Bengal and laid the foundation for British rule in India.