Which one was NOT a great African Kingdom​

Between 1518 and 1548, spanish conquistadores conquered most of the new world, motivated by the a) desire for scientific knowledge. b)  to urge to claim more territory for spain. c) belief that an all-water western route to the orient existed. d) desire to advance national glory, serve god, and seek personal wealth.

Why is it necessary to obey social norms? write briefly.

The second westward surge reached the: mississippi river, appalachian mountains, oregon territory