Who gave the slogan "Jai Jawan Jai Kisan"?

The correct answer is Lal Bahadur Shastri.

Lal Bahadur Shastri was a humble leader who became India's second Prime Minister (1964-66) after the death of Jawaharlal Nehru. He was a seasoned freedom fighter who had served nine years in prison. Following independence, he held several ministerial and party positions in the Indian National Congress. Apart from being General Secretary of the Congress, he was also responsible for railways, transportation, and commerce.

Among the Shastri era's long-term legacies were India's attainment of self-sufficiency in food and India’s defence in the 1965 war. For this, he gave the nation the slogan of ‘Jai Jawan Jai Kisan’ and exhorted the people to make all sacrifices in honour of India.