At one minute past midnight on 15 August 1947, a line drawn through two of British India’s largest provinces turned millions of people into refugees overnight. The partition of India split the subcontinent into the Union of India and the Dominion of Pakistan, ending nearly two centuries of British rule in a single legislative act. The human cost was staggering: between 12 and 20 million people displaced along religious lines, and a death toll that remains disputed to this day, estimated anywhere between two hundred thousand and two million.
A Line Through Bengal and Punjab
The mechanics of partition were, on paper, straightforward. The provinces of Bengal and the Punjab were divided district by district, according to whether each district held a non-Muslim majority—mostly Hindu and Sikh—or a Muslim majority. But a province is not just land. The British Indian Army, the Royal Indian Navy, the Indian Civil Service, the railways, and the central treasury all had to be split between the two new dominions as well. The Indian Independence Act 1947 set all of this in motion, and the two countries legally came into existence within minutes of each other, just after midnight on 14–15 August.
The story of partition, though, began long before 1947. It did not include everything the British had once governed. Burma and Ceylon had already been separated from British India’s administration years earlier. The French and Portuguese enclaves on Indian soil would be absorbed into India separately, over the following decade and more. And neighboring Sikkim, Bhutan, Nepal, and the Maldives were untouched by any of it. Even Bangladesh’s eventual split from Pakistan in 1971 belongs to a different story—a partition of Pakistan, not of India.
Princely States Caught in Between
British India had never been a single uniform territory. Scattered across it were hundreds of princely states, ruled by maharajas and nawabs who held power under treaties with the British Crown rather than direct colonial administration. The Indian Independence Act released these rulers from their old obligations to Britain, and in turn freed Britain from its obligations to them. That left each prince to choose: join India, join Pakistan, or try to stand alone.
Sardar Patel, describing the moment in a January 1948 speech, put it plainly: “On the lapse of Paramountcy, every Indian State became a separate independent entity.” Many rulers signed on to one dominion or the other within weeks, in a wave of accessions that August. Others took far longer to settle the question. A few tried to resist joining either side altogether—most consequentially the rulers of Hyderabad and of Jammu and Kashmir, whose decisions to seek independence would shape regional tensions for decades afterward.
Roots Going Back to 1905
The seeds of division were planted long before anyone spoke of an independent India. In 1905, Viceroy Lord Curzon split the unwieldy Bengal Presidency into a Muslim-majority eastern province and a Hindu-majority western one. Bengalis saw it as punishment for their political defiance, and the backlash was immediate and fierce. The Swadeshi movement called for boycotting British goods, while the slogan *Bande Mataram*—”Hail to the Mother”—became a rallying cry that fused Bengali nationalism with Hindu religious imagery. Some protesters turned to bombings and assassinations of British officials, though most planned attacks were thwarted or failed outright.
The furor over Bengal’s partition had an unintended consequence. Alarmed by the overwhelmingly Hindu character of the protests and anxious about reforms that might favor the Hindu majority, Muslim elites approached the new viceroy, Lord Minto, in 1906 to request separate electorates. That same year, the All-India Muslim League was founded in Dacca. Its leaders had watched the 1871 census reveal, for the first time, the religious makeup of British India’s population by region—and had spent three decades since then growing uneasy as Hindu political and social movements gained visibility. Episodes like the Hindi–Urdu controversy, cow-protection agitation, and anti-cow-killing riots in the United Provinces had deepened that unease. When Bengal was reunified in 1911, undoing Curzon’s partition, many Muslims read it as further proof that British policy could not be trusted to protect their interests.
War, Reform, and an Uneasy Alliance
World War I reshaped the relationship between Britain and its Indian subjects. More than a million Indian and British soldiers of the British Indian Army served in the conflict, and news of their sacrifice traveled the globe by newsprint and radio. India’s standing rose internationally—enough that it became a founding member of the League of Nations in 1920 and sent a team to the Antwerp Olympics that same year. At home, the war fueled louder demands from Congress leaders for greater self-government.
The war also produced a brief, surprising alliance. At the 1916 Lucknow Session, the Congress and the Muslim League struck a bargain: the League backed calls for expanded self-rule, and in exchange, Congress accepted separate electorates for Muslims in provincial and imperial legislatures. The timing mattered—Britain was now at war with the Ottoman Empire, whose Sultan held guardianship over Mecca, Medina, and Jerusalem, and some Indian Muslims had begun to doubt British claims of religious neutrality. The Lucknow Pact was negotiated largely by a younger faction of Muslim League politicians from the United Provinces, including the brothers Mohammad and Shaukat Ali, and it drew the support of a young Bombay lawyer named Muhammad Ali Jinnah—a man who would later lead the League itself. Looking back, the pact seems to have benefited Muslim minority elites in provinces like UP and Bihar more than the Muslim majorities actually living in Punjab and Bengal, the two provinces that would later be split in two.
Reform continued after the war. Secretary of State Edwin Montagu and Viceroy Lord Chelmsford toured India and produced a report that led to the Government of India Act 1919. The Act expanded provincial and imperial legislative councils and introduced a system of “dyarchy,” handing Indian ministers control over areas like education and local government while the British retained authority over policing, irrigation, and the press. It also opened the civil service and army officer corps more widely to Indians. Still, voting rights remained narrow—only about 10% of adult men gained the franchise at the national level—and the British continued shaping outcomes by reserving seats for groups they judged cooperative, favoring rural candidates seen as less confrontational than their urban counterparts.
What we still don’t know
The human toll of partition is the most painful unresolved question. Death toll estimates still ranged, as of 2009, from two hundred thousand to two million—a gap wide enough to reflect how chaotic and poorly documented the violence of 1947 truly was. The precise scale of displacement is similarly imprecise, with figures spanning 12 to 20 million people uprooted. These are not minor rounding errors; they represent the limits of what can be known about one of the twentieth century’s largest mass migrations, and they help explain why the suspicion and hostility born in that year still shadow relations between India and Pakistan.
Sources
– This article is a synthesis of the Wikipedia article on Partition of India (en.wikipedia.org/wiki/Partition_of_India), which itself cites the underlying scholarship. Readers wanting primary sources should follow that article’s reference list.