Why do historians divide the past into periods? Do they face any problems in doing so?​

Historians divide the past into periods on the basis of economic and social factors to characterise the major elements of different moments of the past. Yes, the historians face a lot of problems because economic and social factors do not exist in a stasis, they have a tendency to change constantly.

Explanation:

Historians divide the past into periods .

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Explanation:

interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)