The correct option is Assam.
Explanation
The Ahom style of architecture is a distinct regional school that flourished in the Brahmaputra Valley under the patronage of the Ahom dynasty (1228-1826 CE). It represents a syncretism of indigenous Tai cultural elements, local bamboo-thatch structural forms, and influences from the Pala style of Bengal and Islamic architecture.
Detailed Analysis:
- Geographical Context: The Ahom kingdom was centered in present-day Assam. Consequently, this architectural style developed and remained prominent exclusively in this region.
- Architectural Features: Ahom temples are characterized by unique superstructures. Unlike the standard Nagara shikharas, Ahom temples often feature a polygonal, dome-like roof or a curvilinear form inspired by the chala (thatched roof) style of Bengal and local bamboo huts.
- Influences:
- Pala Style: The proximity to Bengal facilitated the adoption of terracotta ornamentation and curvilinear cornices typical of the Pala and later Bengal Sultanate architecture.
- Tai Migration: The Ahoms migrated from the Tai-Shan region (Southeast Asia), bringing unique masonry techniques. This is visible in secular structures like the Rang Ghar (amphitheater) and the Talatal Ghar, which utilize thin, baked bricks and organic cementing materials.
Key Takeaway: The Ahom style is the specific regional architecture of Assam, best exemplified by the Kamakhya Temple (Nilachal type) and the Shiva Dol at Sivasagar.