The Chola dynasty, particularly under Raja Raja Chola I, established a sophisticated administrative and revenue system that became a model for Indian governance.

Erode is known as the 'Spinning Hub' of India with the highest concentration of spinning mills, producing yarn for both domestic and export markets.

Sangam literature contains references to extensive trade between Tamil kingdoms and the Roman Empire, including mentions of Roman merchants in ports like Puhar.

The Mridangam, central to Carnatic music, has historical roots in the Chola region and was patronized by Chola rulers and temples.

Tiruppur is called the 'Manchester of South India' due to its thriving textile and hosiery industries.

Tamil Nadu introduced its Renewable Energy Policy in 2011, making it a leader in renewable energy production in India.

Poompuhar (ancient Kaveripattinam) was the principal port city of the Chola Empire, crucial for its maritime commerce.

Tamil Nadu has a coastline of approximately 1,290 km, making it one of the states with the longest coastline in India.

Krishnagiri Dam, completed in 1873, is one of the oldest dams in Asia and was built during the British colonial period.

IIT Madras, established in 1959, was the third IIT in India and the first in Tamil Nadu, becoming a premier engineering institution.