Answer: D. Salt
Explanation:
Zone 2 has a large amount of ocean in it and ocean water is salty which means that it can be harnessed to produce salt. Zone 2 therefore was most probably a major producer of salt.
This goes hand in hand with actual statistics today because a major country in Zone 2 is India and they are currently the world's third largest salt producers.
D: Djenn'e-Djeno. Songhai collapsed, Mali fell to Songhai, and Ghana fell centuries earlier than Morocco's existance.
The conquest of Mecca was the conquering of the town of Mecca by Muslims led by the Islamic prophet Muhammad in December. The conquest marked the end of the wars between the followers of Muhammad and the Quraysh tribe.
Medieval, Renaissance, Baroque, Classical, Romantic, Modern, Impressionism, Neoclassicism, Experimental, High Modern, Contemporary
If you need any further explanation, feel free to ask