Answer:
C. Before the forced relocation, there was widespread Japanese American disloyalty and sabotage.
B. In a unitary system there is only one type of government; in a confederal system there are multiple types of governments.
Mali gained their wealth<span> by capitalizing on the trans-Saharan trading of gold and salt. Both empires took advantage of the abundance of minerals in the region to build up surpluses, and this allowed them to expand </span>their<span> territories through trade and conquest.</span>
Answer: B. Spread of the bubonic plague.
Explanation:
The spread of the Bubonic Plague or the Black Death has nothing to do with the Mongols. Scientists speculate that the first wave of the disease arrived in Europe by sea trade routes from Asia to Italy. Italy has been a center of European trade for a long time, and the diseases were transmitted to the mainland by infected ship rats. The plague ravaged Europe on several occasions, and in the first wave, half of the European population died as a result of the infection.