1.Define Chalcolithic Age.

The Chalcolithic or Copper Age is the transitional period between the Neolithic and the Bronze Age.

It is taken to begin around the mid-5th millennium BC and ends with the beginning of the Bronze Age.

It ended in the late 4th to 3rd millennium BC.

mass production/ assembly line production

the right answer for the question that is being asked and shown above is that: "their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.  " the  participant in european imperialism is being described below is that  their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.