Complex sentence: The Cantonese are also known as "Chen-Catung" in Khmer language made up the largest sub-group in Cambodia between the 17th century until the early 20th century.
Split into simpler sentences: The Cantonese are also known as "Chen-Catung" in Khmer language. They made up the largest Chinese sub-group in Cambodia between the 17th century until the early 20th century.