Middle stone age is known as _________ .

________ made easier to hunt fast moving animals .

_______ was the first metal to be discovered by man .

The Civilization flourished in the valley of the rivers Euphrates and Tigris is called  ______________ Civilization.

Man started building simple houses in this period .

By the end of the chattolothic period ,man started living ________ and _____ like  .

Many palaelithic tools have been found from ________ .

CHALCOLITHIC remains have been discovered in the __________and _________ .

CHALCOLITHIC AGE was from_________________.

_________ are tools of Mesolitic age  .