Here is the timeline leading to the announcement on the formation of Telangana state.
1948: The Indian Army annexed princely state of Hyderabad, which had different regions including Telangana.
1950: Telangana became Hyderabad State with appointment of a senior administrator M.A. Vellodi as the chief minister.
1952: First elections were held in Hyderabad State. Burgula Ramakrishna Rao became the first elected chief minister.
Nov 1, 1956: Telangana was merged with Andhra State, which was carved out of Madras State, to form Andhra Pradesh, a united state for Telugu-speaking people.
1969: 'Jai Telangana' movement for separate statehood to Telangana began. Over 300 people killed in police firing.
1972: 'Jai Andhra' movement began in coastal Andhra for separate Andhra state.
1975: Presidential order issued to implement Six-Point Formula, providing some safeguards to Telangana.
1997: Bharatiya Janata Party (BJP) supported demand for Telangana state and in 1998 elections promised 'one vote two states'.
2001: K. Chandrasekhara Rao floated Telangana Rashtra Samithi (TRS) to revive the Telangana movement.
2004: TRS fought elections in alliance with the Congress, won 5 Lok Sabha and 26 assembly seats. The UPA included the issue in its common minimum programme and formed a three-member committee headed by Pranab Mukherjee.
2008: TDP announced support for Telangana demand.
2009: TRS contested elections in alliance with TDP but its tally came down to two Lok Sabha and 10 assembly seats.
Sep 2, 2009: Chief Minister Y.S. Rajasekhara Reddy died in helicopter crash, triggering political uncertainty.
Oct, 2009: Chandrasekhara Rao began fast-unto-death for separate Telangana state.
Dec 9, 2009: Centre announced its decision to initiate the process for formation of Telangana state.
Dec 23, 2009: Following protests in Rayalaseema and Andhra regions and en mass resignations of MPs and state legislators, the centre put the process on hold, citing need for consensus.
Feb 3, 2010: Centre set up five-member Srikrishna Committee to look into Telangana issue.
Dec, 2010: Srikrishna Committee submitted its report, suggested six options.
Dec 28, 2012: Union Home Minister Sushilkumar Shinde announced after an all-party meeting that a decision will be announced in a month.
July 1, 2013: Congress leader Digvijaya Singh announced that a decision on Telangana is in final stages.
July 12, 2013: Congress core group met on Telangana to discuss reports by the chief minister, deputy chief minister and state Congress chief.
July 26, 2013: Congress core group held another meeting, Digvijaya Singh said Congress Working Committee (CWC) and UPA will take a final decision.
July 30, 2013: UPA coordination panel and CWC met and decided to carve out Telangana state.