Analysis of information sources in references of the Wikipedia article "Andhra Pradesh" in English language version.
dowleswaram.
Amaravati on the banks of the Krishna, which was later the southeast capital of the Satavahanas, flourished in its trade with Rome, Ceylon, and Southeast Asia, and may well have been the most prosperous city of India during the second century of the Christian era.
Those of us who have studied the evidence above will prefer to locate this source of most of the Mahāyāna sutras in Andhra. (p. 355) From the internal evidence, it appears that this sutra was written in South India, very likely in Andhra, in which case the country of origin of the Mahāyāna continued in the lead in the development of new ideas in India. (p. 402)
Controlling numerous villages and many large towns, these powerful chiefs commanded large mercenary armies that were the vanguard of Vijayanagara forces during the sixteenth century.
Kalagnana is a special type of discipline very popular in Andhra Desa because of the famous Kalagnanam of Sri Potuluri Veerabrahmendhra swami written in Telugu. It forecasts many incidents which are proved to be correct by the posterity.
A later poet similar to Vemana was Potuluri Veerabrahmendhra swami, popularly known as Brahmamgaru