Andhra State was a state in India created on October 1, 1953 from the Telugu-speaking northern districts of Madras Presidency. On November 1, 1956 it was merged with the Telangana region of Hyderabad State to form the united Telugu-speaking state of Andhra Pradesh.
In 1953, Telugu speakers of Madras Presidency wanted Madras as the capital of Andhra state including the famous slogan Madras Manade (Madras is ours) before Tirupati was included in AP. Madras, at that time was an indivisible mixture of Tamil and Telugu cultures. It was difficult to determine who should possess it. Panagal Raja, Chief Minister of the Madras Presidency in the early 1920s said that the Cooum River should be kept as a boundary, giving the northern portion to the Andhras and the southern portion to the Tamils. In 1928, Sir C. Sankaran Nair sent a report to the Central Council discussing why Madras does not belong to the Tamils. Although historically and geographically it is a part of the Andhra region, the greater political dominance of the Tamils in 1953 at both Central and State level politics caused Madras to remain in the Tamil region. According to the JPC report (Jawahar Lal Nehru, Bhogaraju Pattabhi Sitaramayya, C. Rajagopalachari) Telugu people should leave Madras for Tamils if they want a new state.
http://en.wikipedia.org/wiki/Andhra_State