Finding common themes and separating similar time periods from different time periods in history is known as select the best answer from the choices provided. secularization causation the renaissance periodization.

Periodization.

First of all, it sounds like it would make sense:  periodization sounds like a word that would describe splitting something into periods.  Also, the other answer choices don't make sense; secularization is the shift from religious beliefs to secular (less religious) ideals, causation is the relationship between cause and effect, and the Renaissance is just, well, the Renaissance (a period in history).

The  pan-african movement  was an "emotional, cultural, psychological and ideological  movement  that began among the  african  dispora in the western hemisphere, for a closer  purpose, so that  african  people could feel secure, attain political, economic as well as psychological power visa vis other races or world regions" .