Original: When India became independent in 1947, Madras Presidency became the Madras State, comprising present-day Tamil Nadu, coastal Andhra Pradesh, northern Kerala, and the southwest coast of Karnataka.
Simplified: When India became independent in 1947, Madras Presidency became a part of India. It covered the areas of present day Tamilnadu, coastal parts of Indian states of Andhra Pradesh, northern Kerala, and the southwest of Karnataka.