This is with reference to the time when the Nizam of Hyderabad, Ali Khan, ceded the region to the British as a part of subsidiary alliance.

The name Rayalaseema hearkened back to the Vijayanagara times, whose Kings used a suffix Rāya (tadbhava of Sanskrit Rāja) or Rāyalu in Telugu as their regnal title.

In February 2014, the Andhra Pradesh Reorganisation Act, 2014 bill was passed by the Parliament of India for the formation of Telangana state comprising ten districts.

[8] The formation of a new state named Telangana from Andhra Pradesh is not considered an amendment to the Constitution of India per article 3 and 4 of that document.

The region borders the state of Tamil Nadu to the south, Karnataka to the west and Telangana to the north, Nellore, Prakasam districts and bay of bengal in the east.

The lagoon is one of the three important wetlands to attract northeast monsoon rain clouds during the October to December season.

The lagoon comprises the following regions, which adds up 759 square kilometres (293 sq mi) according to Andhra Pradesh.

[16] Rayalaseema is home to numerous factional families who are often intertwined with political parties and violently clash with each other.