The Mon-Khmer languages are a branch of the larger Austroasiatic language family. They are primarily spoken in Southeast Asia, particularly in countries like Vietnam, Cambodia, and Laos. This group includes languages such as Khmer, the official language of Cambodia, and Mon, spoken in parts of Myanmar and Thailand. Mon-Khmer languages are known for their rich phonetic systems and complex grammar. They often feature a variety of tones, which can change the meaning of words. These languages have a significant cultural and historical importance, reflecting the diverse ethnic groups in the region.