The Ice Age ended around 8000 B.C.2)The geographical features of the areas surrounding Korea substantially became what they are today. The climate, too, became similar to what it is today. During this period, people used sharp-edged tools made by chipping large stones. People lived by hunting and catching fish with these tools. Gradually, they began to engage in farming and raising livestock. As they changed from a hunting and gathering economy to one of production, people stopped migrating and began to settle down in one place. They came out of the caves and began to build houses. Gradually, a form of settled communal life developed and villages were established. Around the 15th to 10th century B.C., during the Bronze Age, rice cultivation was introduced and agriculture was developed. People’s lives became more stabilized and villages grouped together to form larger communities. Political societies were organized in various parts of the region. People who settled on the Korean peninsula during this period, as well as those who migrated from the north in search of a warmer climate, became the ancestors of the Korean people of today. History books record them as the Yemaek people or the Han people of Korea. The word Hanguk, meaning Korea, is derived from the Han people.