The Haripura Congress (1938) remains a milestone in Indian freedom struggle, because

The Haripura Congress session of 1938, presided over by Subhash Chandra Bose, is historically significant for introducing the formal idea of economic planning in India. In his presidential address, Bose emphasized that national problems like poverty and illiteracy could only be solved through scientific production and socialistic lines, necessitating a commission for a comprehensive plan of reconstruction [t1][t5]. Consequently, the National Planning Committee was established in 1938 with Jawaharlal Nehru as its chairman [c5][t6]. While the Congress had previously rejected the Government of India Act, 1935, at sessions like Lucknow (1936), Haripura's unique legacy was the institutionalization of the planning concept [c3][t4]. Nehru was not 'anointed' Prime Minister here; he was appointed to the interim government much later in 1946 [c2]. Thus, the session's milestone status is defined by the shift toward a planned economy for a future independent India [t1][t6].

Sources

1. [1] https://frontline.thehindu.com/politics/direct-democracy/article4275893.ece
2. [2] Rajiv Ahir. A Brief History of Modern India (2019 ed.). SPECTRUM. > Chapter 21: Congress Rule in Provinces > Social Welfare Reforms > p. 414
3. [3] Rajiv Ahir. A Brief History of Modern India (2019 ed.). SPECTRUM. > Chapter 35: Making of the Constitution for India > Background > p. 612
4. [4] Rajiv Ahir. A Brief History of Modern India (2019 ed.). SPECTRUM. > Chapter 35: Making of the Constitution for India > Constituent Assembly > p. 614