In 1215, Kalinga Magha, an invader with uncertain origins, identified as the founder of the Jaffna kingdom, invaded and captured the Kingdom of Polonnaruwa. He sailed from Kalinga 690 nautical miles on 100 large ships with a 24,000 strong army. Unlike previous invaders, he looted, ransacked and destroyed everything in the ancient Anuradhapura and Polonnaruwa Kingdoms beyond recovery. His priorities in ruling were to extract as much as possible from the land and overturn as many of the traditions of Rajarata as possible. His reign saw the massive migration of native Sinhalese people to the south and west of Sri Lanka, and into the mountainous interior, in a bid to escape his power. Sri Lanka never really recovered from the impact of Kalinga Magha's invasion. King Vijayabâhu III, who led the resistance, brought the kingdom to Dambadeniya. The north, in the meanwhile, eventually evolved into the Jaffna kingdom. The Jaffna kingdom never came under the rule of any kingdom of the south except on one occasion; in 1450, following the conquest led by king Parâkramabâhu VI's adopted son, Prince Sapumal. He ruled the North from 1450 to 1467 CE. The next three centuries starting from 1215 were marked by kaleidoscopically shifting collections of capitals in south and central Sri Lanka, including Dambadeniya, Yapahuwa, Gampola, Raigama, Kotte, Sitawaka, and finally, Kandy. In 1247, the Malay kingdom of Tambralinga which was a vassal of the Srivijaya Empire led by their king Chandrabhanu briefly invaded Sri Lanka from Insular Southeast Asia. They were then expelled by the South Indian Pandyan Dynasty. However, this temporary invasion reinforced the steady flow of the presence of various Austronesian merchant ethnic groups, from Sumatrans (Indonesia) to Lucoes (Philippines) into Sri Lanka which occurred since 200 BCE. Chinese admiral Zheng He and his naval expeditionary force landed at Galle, Sri Lanka in 1409 and got into battle with the local king Vira Alakesvara of Gampola. Zheng He captured King Vira Alakesvara and later released him. Zheng He erected the Galle Trilingual Inscription, a stone tablet at Galle written in three languages (Chinese, Tamil, and Persian), to commemorate his visit. The stele was discovered by S. H. Thomlin at Galle in 1911 and is now preserved in the Colombo National Museum. Early Modern Sri Lanka The early modern period of Sri Lanka begins with the arrival of Portuguese soldier and explorer Lourenço de Almeida, the son of Francisco de