Cambodia's Continent
Cambodia is a country located on the continent of Asia. More precisely, it sits in mainland Southeast Asia, a region in the southeastern corner of the Asian continent. It is bordered by three neighboring countries - Thailand, Laos, and Vietnam - and it also has a coastline on the Gulf of Thailand.
Mainland Southeast Asia
Southeast Asia is often split into two parts. There is the mainland portion, attached to the rest of the Asian continent, and there is the maritime portion, made up of islands. Cambodia belongs firmly to the mainland part, sharing this area with countries like Thailand, Vietnam, Laos, and Myanmar. This whole region was historically known by another name, Indochina, because it sat between the great civilizations of India and China and absorbed influences from both.
A Land of Plains and Rivers
Cambodia is largely a country of broad plains and great rivers. The mighty Mekong River flows through it, and it is home to a huge lake that swells and shrinks dramatically with the seasons. For centuries, this land was the heart of the powerful Khmer Empire, whose influence once spread across much of mainland Southeast Asia.
Source
This article was written using information from Wikipedia.