Prehistory Vocabulary Prehistory - time before writing Hominid - early ancestors of humans Ancestor - is a relative who lived in the past Tool - is any hand held object that has been modified to help a person accomplish a task Paleolithic Era (Old Stone Age) - the first part of the Stone Age that lasted until 10,000 years ago Society - a community of people who share a common culture Hunter-Gatherers - people who hunt animals and gather wild plants, seeds, fruits and nuts to survive Migrate - moving from one place to another Ice age - freezing period of time that ended about 10,000 years ago land bridge - a strip of land connecting two continents Mesolithic Era - Middle Stone Age that began 10,000 years ago and ended 5,000 years ago Neolithic Era - The Last Stone Age - from 10,000 to 5,500 years ago Domestication - the process of adapting wild plants and animals for human use Agriculture - the act of farming Megaliths - is a large stone that has been used to construct a structure or monument, either alone or together with other stones