Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. V nh Bình was a province in the Mekong Delta region of southern Vietnam. It was merged in 1976 to Cuu Long and in 1992 re-split as Tra Vinh Province. The Mekong Delta is the region in southwestern Vietnam where the Mekong River approaches and empties into the sea through a network of distributaries. The Mekong delta region encompasses a large portion of southeastern Vietnam of 39,000 square kilometres (15,000 sq mi). The size of the area covered by water depends on the season. The Mekong Delta has recently been dubbed as a 'biological treasure trove'.