Historical Chronology By the end of B.E 18, Nan became an independent and moderate-size state which had its evolution closed to Sukhothai dominion. The background started from a tribe leaded by Praya Phuka, annex the flat land on the upper part of Nan in which the center was located at Yang city. Chao Khun Fong, the protege of Praya Phuka brought some troops to settle another city called Pua on the flat land in Tambon Silapetch, Amper Pua (nowadays) which thereafter was taken over by Praya Ngam Mueang from Phayao for a period of time. Pua had started to establish a good relationship with Sukhothai by then in an effort to balance the political power with Phayao.The time had passed until the year 1902 B.E., the growing city leaded by Praya Karn Mueang, the descent of Chao Khun Fong was moved down to south by the east bank of Nan River. The city had been built to encircle Pratat Chaehaeng Chedi, then the holy relic from Sukhotai was installed within the Chedi. In the year 1911 B.E. when Chae Haeng city has faced a famine; Praya Phakong the son of Praya Karn Mueang then decided to move the city again to the west bank of Nan River which is the location of Nan city until now.
          Nan established good relationships in commerce with small surrounding cities such as Luang Prabang, Lanchang, Sipsong Panna that subsequently created strong relationship in

Pra Maha Dhammaracha II of Sukhothai

a colony of Burma under the king Hongsawadee during the year 2096 - 2101 B.E.; Chao Praya Polathep Ruechai, the governor of Nan has escaped into Luang Prabang. Yet Nan was still under the governance of Burma until the end of K rungsri Ayudhaya

The city of Nan in the past

era in the year 2310 B.E. Nonetheless, the hard time of Nan was during 2101-2317 B.E. that it had been fighting for the freedom many times, people were suffered and escaped into the jungle, some were taken to be slaves, city and temples were burnt down.

          In the year 2331 B.E. Chao Uttaworapanyo, the vassal prince of Nan had surrendered to Bangkok (in the reign of king 1st) and started a policy ..bring vegetable into the basket, bring people into town., a lot of Tai Lue people were immigrated back to Nan. In the reign of king 5th, the encroachment of the colonialism of Britain and France, Bangkok reformed the governance of Lanna into centralization in 2435 B.E. that central government of Bangkok appointed commissioners to manage the city affair instead of aristocracy group.

After the 1893 crisis that Siam had lost the west bank area of Maekong river to France, Nan gained its importance as a frontier to Luang Prabang, a colony of France. The relationship between Nan and Bangkok had been doing well so the 5th King promoted Chao Suriyapong Paritdetch to be Prachao Suriyapong Paritdetch to reward the goodness of Nan in helping Bangkok to fight in the rebellious war in Chiangtung.

          Nan became to the province of Thai in the reign of King 7th. After Chao Mahaphrom Surathada, the last governer of Nan was died in the year 2474 B.E. thus, the rule of prince was abolish from the moment.