The Dangrek or "Carrying-Pole Mountains" run along the northwest border of this country, whose southwestern region contains the Elephant Mountains, a subrange of the Cardamom Mountains. This country's only deepwater port was founded in 1964 and named after the then-king, who abdicated in 2004. That city, Sihanoukville, has seen a surge in tourism, but the most popular destinations remain Siem Reap, at the northern end of the Tonle Sap, and its largest city, at the confluence of the Tonle Sap River and the Mekong. The aforementioned Siem Reap serves as a gateway to this country's temples of Angkor. For 10 points, name 
The Dangrek or "Carrying-Pole Mountains" run along the northwest border of this country, whose southwestern region contains the Elephant Mountains, a subrange of the Cardamom Mountains. This country's only deepwater port was founded in 1964 and named after the then-king, who abdicated in 2004. That city, Sihanoukville, has seen a surge in tourism, but the most popular destinations remain Siem Reap, at the northern end of the Tonle Sap, and its largest city, at the confluence of the Tonle Sap River and the Mekong. The aforementioned Siem Reap serves as a gateway to this country's temples of Angkor. For 10 points, name this Southeast Asian country where the Khmer Rouge ordered forced evacuations of the capital, Phnom Penh.
The Dangrek or "Carrying-Pole Mountains" run along the northwest border of this country, whose southwestern region contains the Elephant Mountains, a subrange of the Cardamom Mountains.
Cambodia