Complex sentence: In January 1967, when the only opinion poll in the country was conducted in Goa by the Indian government, Goans overwhelmingly decided against the merger of Goa into Maharashtra, and it eventually became the 25th independent state of India on 30 May 1987.
Split into simpler sentences: In January 1967, when the only opinion poll in the country was held in Goa by the Indian government, Goans overwhelmingly decided against the merger of Goa into Maharashtra. It eventually became the 25th independent state of India on 30 May 1987.