Due to political problems. For both scenarios, there are border trade, trade in and out of the system, because most of the area is forest area. The mountain and the river so it can smuggle goods to smuggle people into or out of the country easily.
Due to political problems For both situations, the border trade in both formal and informal. Due to space conditions Most of the forests, mountains and river, making it illegal to smuggle the goods into or out of the country easily.
Due to political problems. The border trade is the trade both within and outside the system, because the area, most area of forests, mountains, and the Mekong River.