It is the earliest period. This comes from two Greek words 'paleo' meaning old and 'lithos' meaning old. The name points to the importance of finds of tools. This period extends from about 2 million years ago to about 12000 years ago. This long span of time is divided into lower, middle and upper paleolithic.This long stretch of time covers 99% of human history.
__________________________________________________________________
EVERY COUNTRY NEEDS A GOVERNMENT TO MAKE DECISIONS AND GET THINGS DONE.THE GOVERNMENT CONTROLS RESOURCES AND DISTRIBUTES TO THE PEOPLE SO THAT ALL HAVE ENOUGH TO EAT AND LIVE. THE GOVERNMENT PROTECTS THE TERRITORY OF THE COUNTRY SO THAT PEOPLE FEEL SECURE.THE GOVERNMENT ALSO TAKE ACTIONS ON MANY SOCIAL ISSUES. SO THE GOVERNMENT IS IMPORTANT FOR A COUNTRY.