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"We arrived at the capital, Fas [Fez], God Most High Guard it. There I said farewell to our master, God strengthen him, and set out on a journey to the country of the blacks. I reached the city of Sijilmasa, a very beautiful city. After twenty-five days we reached Taghaza. It is a village with no attractions. A strange thing about it is that its houses and mosque are built of blocks of salt and roofed with camel skins. There are no trees, only sand in which is a salt mine. They dig the ground and thick slaves are found in it. A camel carries two slabs." From The Travels of Ibn Battuta, A.D. 1325–1354. The Human Record: Sources of Global History, 8th edition, volume 1, p. 347.

1. Which of the following explorers can best be compared to Ibn Battuta?
a. Vasco da Gama
b. Marco Polo
c. Zheng He
d. Faxian

2. Ibn Battuta describes northern cities located on which of the following trade networks?
a. The Mediterranean Sea
b. Indian Ocean basin
c. Silk Roads
d. Trans-Saharan routes

3. Which of the following had the least impact on the events described in the passage?
a. The collapse of imperial states in the wake of
the expansion of the Mongol Khanates
b. The domestication of the camel and creation of
new related technology like camel saddles
c. The expansion of Islam due to the activities of
merchants and missionaries
d. The rise of the Islamic gunpowder empires
including the Ottoman Sultanate