The Indus Valley Civilization, also known as the Harappan Civilization, flourished in the Indus River Valley from around 2500 to 1900 BCE.

Chandragupta Maurya founded the Maurya Empire in 322 BCE after defeating the Nanda Empire.

The Battle of Panipat in 1761, also known as the Third Battle of Panipat, was a decisive victory for the Afghan forces led by Ahmad Shah Abdali over the Maratha Confederacy.

The Indian National Congress held its first session in Bombay (now Mumbai) in December 1885.

Lord Mountbatten, the last Viceroy of India, became the first Governor-General of independent India on August 15, 1947.

The Constituent Assembly of India adopted the Constitution of India on November 26, 1949, and it came into effect on January 26, 1950.

The introduction of high-yielding varieties of seeds, particularly wheat and rice, in the mid-1960s marked the beginning of the Green Revolution in India.

India's first satellite, Aryabhata, was launched on April 19, 1975, from the Satish Dhawan Space Centre in Sriharikota.

The Panchayati Raj system, a decentralized system of local self-government, was implemented in India through the 73rd and 74th Amendments to the Constitution in 1992.

India conducted a series of nuclear tests in Pokhran, Rajasthan, in May 1998, declaring itself a nuclear power.

The Right to Information Act, which provides citizens with the right to access information from government bodies, came into effect in India on October 12, 2005.

India hosted the Commonwealth Games for the first time in 2010 in New Delhi.

The Goods and Services Tax (GST) was implemented in India on July 1, 2017, replacing multiple indirect taxes levied by the central and state governments.

India's first mission to Mars, Mangalyaan, was launched on November 5, 2013, and successfully entered Mars' orbit in September 2014.

India became a full member of the Shanghai Cooperation Organization (SCO) in June 2017.