Question

Which of these could not have occurred until the postclassical era

Answer 1

Answer:a west African ruler would convert to Islam that should help u

Step-by-step explanation:

Answer 2

Postclassical era exist from 600 CE - 1450 CE

so, the one that could not have occurred until the postclassical era would be : West African Ruler converts to Islam
Because Islam started to exist/developed around the beginning of 600 CE.

hope this helps