The Indian Independence Act 1947 ended British rule and created India and Pakistan as independent dominions on August 15, 1947, reshaping South Asia’s political landscape.

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• The Act was passed by the Parliament of the United Kingdom in July 1947 based on the Mountbatten Plan, enabling the transfer of power and the partition of British India.
• The background included decades of freedom struggle led by the Indian National Congress, movements like the Quit India Movement, and rising communal tensions demanding separate nations.
• The Act partitioned British India into India and Pakistan, ended British sovereignty, abolished the office of the Viceroy, and empowered Constituent Assemblies to draft independent constitutions.
• It introduced boundary demarcation through the Cyril Radcliffe Commission, leading to large-scale displacement and communal violence across the newly formed borders.
• The Act granted princely states the option to join India or Pakistan or remain independent, thereby ending British paramountcy over these territories.
• Its significance lies in ending nearly 200 years of colonial rule, initiating decolonisation globally, and laying the foundation for democratic governance in India.
• The Act triggered one of the largest mass migrations in history, causing humanitarian crises, widespread violence, and long-term geopolitical tensions, especially over Kashmir.
• It led to constitutional development, with India adopting its Constitution in 1950, establishing a sovereign democratic republic with strong institutional frameworks.