The original settlers of the area, Karen Mongolia more than 20,000 years ago, when the war had escaped to Tibet . And when it was invaded by Chinese troops would withdraw to the south again. Until it came to the land Salawin River in Myanmar. Karen ethnic group living species density in the northern region. And west of Karen in the Karen refugees from Myanmar are. The current population of the Karen living in Myanmar and Thailand, about 2.6 million people, approximately 400,000 people.