Here's a breakdown of the influences:
* Bending: The four elements (water, earth, fire, and air) and their corresponding bending styles draw inspiration from Chinese martial arts and Tibetan Buddhism.
* Architecture and fashion: The Fire Nation's architecture and clothing are reminiscent of Imperial China, while the Earth Kingdom and Water Tribes draw from traditional Asian styles.
* Spirituality: The series heavily incorporates Buddhist and Taoist philosophies, focusing on themes like balance, harmony, and inner peace.
* Mythology: The series incorporates elements of East Asian mythology, including the use of dragons and the concept of spirits.
While the series doesn't specifically name a country or region, the overall influence points to a world inspired by East Asia.