Answer:
B. About life in the Empire of Mali.
Explanation:
Option A is not correct as Ibn Battuta lived and wrote in 15th century, while Roman Empire collapsed in the 5th Century.
Options C and D are not correct as we no details of that in his writings.
He didn't visit Mali during Musa's reign, but later during the reign of Suleyman Keita and was able to see how life functioned in this kingdom.
Intergrated but uneqaul
After slave labour, americans found itself with a problem of intergrating blacks into the system, but the main headaches after 1920's was the question of equality, that led to emergence of rigorous activism.
This term is most commonly used to refer to the Soviet-American Cold War.