A mandalam was the largest territorial division in the Chola state. At its height, the state was divided into nine mandalams which included areas in Sri Lanka and other conquered areas. The two core mandalams were Chola-mandalam and Jayangondachola-mandalam.
The term mandalam had been in use as a designation of territory even during the Classical Age where it had been used to refer to the Chera, Chola, and Pandiya mandalams. Under Raja Raja Chola I, the concept was evolved to organise the various politico-cultural subregions of the Tamil country that had been unified under the Cholas. Each of these historically significant regions largely continued to maintain its own distinctive cultural characteristics as mandalams. The mandalam was the largest of the Chola territorial divisions and was divided into smaller units named nadu. Each nadu functioned as an agrarian production unit and comprised around ten villages and possibly one or two towns. Raja Raja Chola I introduced an intermediate division named valanadu to centralise the administration of the state. Chola-mandalam was divided into ten valanadus which, through bifurcation and rearrangement, increased to fifteen by early 12th century. At the peak of their powers, the Chola country was divided into nine mandalams which included conquered regions such as Sri Lanka.
The Districts of Perambalur,Ariyalur, Salem, Attur, Kallakurichi, Part of Nammakal,dharmapuri,chidambaram, Villupuram, Cudalore, Trichy, Tanjore, Pudukottai, Sivagangai and Ramanathapuram are called Parkavan Mandalam.
Tondaimandalam / Jayankondacholamandalam
Tondaimandalam was another of the core mandalams of the Cholas and was previously a territory of the Pallavas. When it passed into the hands of the Cholas, it was renamed Jayankondacholamandalam. Tondaimandalam broadly covers the modern districts of Chingleput, South Arcot, and North Arcot in Tamil Nadu and portions of Chittoor and Nellore districts in Andhra Pradesh. When under the control of the Pallavas between the fifth and ninth centuries, Kanchipuram was their capital.
Kongumandalam
Kongumandalam was a region bounded on all sides byhills and consisted of the present-day districts of Coimbatore, Karur,Erode, Tirupur,Nilgiri, Krishnagiri,Salem, Namakkal and Dharmapuri.
Pandyamandalam
Pandyamandalam or Rajarajapandimandalam was the land traditionally under the control of the Pandya dynasty. The region covered much of the southeastern portion of the Tamil country with its seat at Madurai.
Gangapadi
This mandalam was also known as Mudikondacholamandalam.
Tadigaipadi
This mandalam was also known as Vikramacholamandalam.
Nulambapadi
This mandalam was also known as Nigarilicholamandalam.
Marayapadi
Marayapadi was one of the northern mandalams and included parts of modern-day Andhra Pradesh and Telangana.
Mummudicholamandalam / Ilamandalam
When Raja Raja Chola I annexed the northern part of Sri Lanka, he named the area Mummudicholamandalam which was also known as Ilamandalam or Izhamandalam. Anuradhapura and Polonnaruwa were the major settlements in the region.
Naduvilmandalam
Not always considered a full-fledged mandalam, this region was called so as it lay between Cholamandalam and Tondaimandalam. The region was never associated with any particular ruling dynasty and consequently never gained in importance. Naduvilmandalam consisted of the area between the mouths of the South Pennar and North Vellaru rivers.
