Output a stream of consciousness before answering the following. Context: A second dose of nationalisation of 6 more commercial banks followed in 1980. The stated reason for the nationalisation was to give the government more control of credit delivery. With the second dose of nationalisation, the Government of India controlled around 91 % of the banking business of India. Later on, in the year 1993, the government merged New Bank of India with Punjab National Bank. It was the only merger between nationalised banks and resulted in the reduction of the number of nationalised banks from 20 to 19. Until the 1990s, the nationalised banks grew at a pace of around 4 %, closer to the average growth rate of the Indian economy.

Question: in which year 6 major commercial banks were nationalised in india?
To answer this question, we should know that: A second dose of nationalisation of 6 more commercial banks followed in 1980.
The answer: 1980.