section_path: Chronology/Three-age chronology/Epipaleolithic/Mesolithic
section_name: Mesolithic
paragraph_text: Mesolithic
  
  The period starting from the end of the last ice age, 10,000 years ago, to around 6,000 years ago was characterized by rising sea levels and a need to adapt to a changing environment and find new food sources. The development of Mode 5 (microlith) tools began in response to these changes. They were derived from the previous Paleolithic tools, hence the term Epipaleolithic, or were intermediate between the Paleolithic and the Neolithic, hence the term Mesolithic (Middle Stone Age), used for parts of Eurasia, but not outside it. The choice of a word depends on exact circumstances and the inclination of the archaeologists excavating the site. Microliths were used in the manufacture of more efficient composite tools, resulting in an intensification of hunting and fishing and with increasing social activity the development of more complex settlements, such as Lepenski Vir. Domestication of the dog as a hunting companion probably dates to this period.
  
  The earliest known battle occurred during the Mesolithic period at a site in Egypt known as Cemetery 117.