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||Prachin Buri used to be a very prosperous town with beautiful waterfalls and canals which are very popular among nature adventurers.
In the old days, Prachin Buri had a long history of civilization of about 800 years ago, since the Dvaravati period. The ruined town of Muang Si Mahosot at Tambon Khokpip, Amphoe Mahosot was discovered. At Ban Khok Kwang, Amphoe Si Mahosot, east to Mueang Si Mahosot, there was an ancient community at the same period as Muang Si Mahosot.
Through the traces of the ancient towns, there were discoveries of historical venues that were used for religious purposes and historic materials such as Buddha images, earthenwares, and pottery. It was also recorded that the center of civilization has been moved to the present coast of the Bang Pakong River. There were many administration alterations, from town to Monthon, and Changwat (Province) at present.
||Located in the eastern border of Thailand, facing Cambodia at Aranyaprathet, Sa Kaeo is a popular province known as a trading centre.
In the past, Sa Kaeo was a major civilized community. Its long history had dated back since the Suwannaphum and Dvaravati Periods. The archeological sites of Khmer arts and stone inscriptions are the outstanding examples of this civilization.
Administratively, Sa Kaeo has been a district of Prachin Buri Province for a long period, and has officially been upgraded as a province since December 1, 1993.
Sa Kaeo is 245 kilometres, east of Bangkok, with the area about 7,195 square kilometres. Sa Kaeo is divided into 7 Amphoes (districts) and 2 King Amphoe (sub-districts): Amphoe Muang, Amphoe Watthana Nakhon, Amphoe Aranyaprathet, Amphoe Ta Phraya, Amphoe Khao Chakan, Amphoe Wang Nam Yen, Amphoe Khlong Hat, King Amphoe Khok Sung, and King Amphoe Wang Somboon.
||Chachoengsao or Paet Rio is located on the east of Bangkok. Its fertility is due to Bang Pakong River. It is an important venue for agricultural products in the Central Region, with mango as the most popular fruit of the province. Moreover, it is the location of the sacred Phra Phutthasothon Buddha image.
Derived from Khmer, the name Chachoengsao means deep canal, while the name of Paet Rio (Paet means eight and Rio means stripes) has been believed to have come from the way dried fish (which are abundant in the area) were being pierced into eight stripes.
The history of Chachoengsao dated back since the Ayutthaya Period during the reign of King Phra Borom Tri Lokkanat. Most people live along the banks of Bang Pakong River and canals. Phra Phutthasothon or Luang Pho Sothon is the center of beliefs and faith. In the past, Chachoengsao was a small town, and was upgraded to a province in 1916.
Chachoengsao is 80 kilometers from Bangkok, with the area of 5,351 square kilometers. The local administration is divided into 10 Amphoe (district) and 1 King Amphoe (sub-district), namely: Amphoe Muang, Bang Khla, Bang Nam Prieo, Bang Pakong, Ban Pho, Phanom Sarakham, Sanam Chai Khet, Plaeng Yao, Ratchasan, Tha Takiap, and King Amphoe Khlong Khuean.