Cochinchina was the most southern part (south ) east of Vietnam in Cambodia , especially forming the Mekong River Delta (the other two parts of Vietnam were Annam and Tonkin). In the sixteenth century, other names such Chinecochin or Champachine are attested . Initially not including the kingdom of Champa , the name will be expanded later in the French empire in the entire southern part . Locally it is called Nam Bộ (南 圻), meaning " southern border".
Vientiane (Viangchan, Lao) is the capital of Laos (People's Democratic Republic of Laos). Its population is estimated at around 716,000 inhabitants (2004). It is located on the left bank of the Mekong River, which marks the border with Thailand, almost opposite the Thai town of Nong Khai . Its ancient name is Sri Sattanak or Sisattanak (Lao : ສີ ສັດ ຕະ ນາກ). Sisattanak is now a district of its suburbs. The city was built in prefecture provincial status when sharing in 1989 and 1994 of the former province of Vientiane into three entities, the new Vientiane Province in the northwest, the vast