Question

how do historian divide the past in to periods? do they face any problem in doing​

Answer 1

Answer:

yes they divide it by discovering the things and applying carbon_14 procedure to know from which age the things are

Answer 2

Answer:

Historians divide the past into periods based on the economic and social factors which characterize them. In doing so they are faced with two problems. First, economic and social changes keep taking place hence definite boundaries cannot be drawn. Second, these periods are compared with modernity.