Trivia: Which of these national capitals lies on the Mekong River?
Hanoi, Vietnam
Phnom Penh, Cambodia
Bangkok, Thailand
Kuala Lumpur, Malaysia
The correct answer is Phnom Penh, Cambodia
So why is this answer correct? : The 2,700-mile-long Mekong River travels through China, Myanmar, Laos, Thailand, Cambodia, and Vietnam. It’s the longest river in southeast Asia and the 12th-longest in the world. Two national capitals lie on its banks — one is Vientiane, Laos, and the other is Phnom Penh, Cambodia. Once called the “Pearl of Asia,” Phnom Penh actually lies on the confluence of three rivers: the Mekong, the Bassac, and the Tonlé Sap.