megaliths
huge stone monument
agriculture
farming
domestication
the process of changing plants or animals to make them more useful to humans
Neolithic Era
the New Stone age ; when people learned to make fire and tools like saws and drills
Mesolithic Era
the Middle part of the Stone age; marked by the certain of smaller and more complex tools
land bridges
a strip of land connecting two continents
ice ages
long periods of freezing weather
migrate
to move to a new place
hunter- gatherers
people who hunt animals and gather wild plants, seeds, fruit, and nuts to survive
society
a community of people who share a common culture
Paleolithic Era
the first part of the stone age; when people first used stone tools
tool
an object that has been modified to help a person accomplish a task
ancestor
relative who lived in the past
hominid
an early ancestor of humans
prehistory
the time before there was writing