related to the population of Thailand, Cambodia and Vietnam arrived on the Malay Peninsula bringing new technologies, better tools, and ceramics. In the peninsula, slash-and-burn agriculture was commonly practiced. Traditionally, these migrants are associated with the ancestors of the Senoi people, but genetic studies suggest that the influx of new population was small, and migrants were mixed with locals. According to Glottochronology data, speakers of Aslian languages appeared in the Malay Peninsula, dating from about 3,800 to 3,700 years ago. This is consistent with the peninsula ceramic tradition of Ban Kao from Central Thailand. During 2,800-2,400 years ago, the differentiation of the North Aslian language, Central Aslian languages and Southern Aslian languages began to develop. Early history Some groups of the Austronesian speakers began to arrive in the Malay Peninsula, probably from Kalimantan and Sumatra, in 1000 BC. According to linguists, some of these early non-Malay arrivals are of Malayo-Polynesian peoples. These Proto-Malay tribes inhabited mostly small, geographically divided groups along the coast and along rivers, while the inner jungle areas remained entirely with the native population. Each group of Proto-Malays developed their local character, adapting to specific local conditions. The Southern Aslian speakers had the greatest contact with the newer population. It is believed that the ancestors of Jakun people and Temuan people who now speak Malay language, were native speakers of Aslian in the past. The Orang Asli kept to themselves until the first traders from India arrived in the first millennium of the Common era. Maritime trade routes brought traders from India, China, the Mon kingdoms located in modern-day Myanmar, and later from the Khmer Empire of Angkor, in search of local produce. Those living in the interior bartered inland products like resins, incense woods, and feathers for salt, cloth, and iron tools. From about 500 BCE, on the west coast of the Malay Peninsula and on either side of the Kra Isthmus, traders established their settlements, some of which later grew into large trading ports. At that time Kedah, in particular, was becoming an important center of international trade. The emergence of the Malays The development of the slave trade in the region was a powerful factor influencing the fate of the Orang Asli. The enslavement of Negrito tribes commenced as early as 724 CE, during the early contact of the Malay Srivijaya empire. Negrito pygmies from the southern jungles were enslaved, with some being exploited