which kingdom ruled here?
Sukhothai Kingdom
Thailand
Around 1240, Pho Khun Bang Klang Hao, a local Tai ruler, rallied the people to rebel against the Khmer. He later crowned himself the first king of Sukhothai Kingdom in 1238. 
what is the structural design of gvk's kempegowda international airport based on When a study predicted the airport would receive 6.7 million passengers in 2008, the airport was redesigned from its initial capacity of 4.5 million passengers to 11 million, with the terminal size expanded and the number of aircraft stands increased. when did its planning begin? March 1991 was it done under any company? Yes, Tata Group, Raytheon and Singapore Changi Airport what is the last mentioned? It is a major civilian airport that serves Singapore, one of the largest transportation hubs in Asia and one of the world's busiest airports by international passenger and cargo traffic. how is it developed? Jewel Changi Airport (new terminal structure) was developed by Jewel Changi Airport Trustee Pte Ltd. what are its main markets? Several including Indonesia, Malaysia, China, and Thailand. where is this last mentioned place located? In Southeast Asia where did its name originate from? According to George Cœdès, the word "Thai" () means 'free man' in the Thai language, "differentiating the Thai from the natives encompassed in Thai society as serfs".
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Thailand [SEP] Early states and Sukhothai Kingdom
He also created a network of states through political alliances to the east and north of the Mekong. While in the port in Lower Chao Phraya Basin, a federation around Phetchaburi, Suphan Buri, Lopburi, and the Ayutthaya area was created in the 11th century.