A detailed and comprehensive review of the tribal peoples’ problem was taken up on the eve of the Fifth Five Year Plan period. The main objective of ITDA is socio-economic development of tribal communities through income generating schemes allied with Infrastructure Development programmes and protection of the tribal communities against exploitation. The ITDA project areas are generally contiguous areas of the size of a Tehsil or Block or more in which the ST population is 50%; or more of the total. Due to the demographic profile of the tribal people in these regions. Andhra Pradesh and Orissa have opted for an Agency model under the Registration of Societies Act and the ITDPs there are known as ITD Agencies (ITDAs).