Ruling the Byzantine Empire and providing the "bubonic plaque" or "Justinian's plaque".
Answer:
B. mercury
Explanation:
Mercury is one of the most common toxic chemicals that can be found in contaminated fish. This is because mercury has become a common pollutant in rivers and other waterways since it it commonly used in mining and industrial operation, and these operations end up throwing the mercury into the waterbodies, where the fish absorb it.
The owner was John Jacob Astor.
Answer: As a nation dependent on the institution of slavery, the United States feared that the Haitian Revolution would lead to a revolt in the American South.
Explanation:
In the United States, there were mixed reactions to the Haitian Revolution which freed the enslaved people of Haiti as on the one hand, throwing of the shackles of their colonial masters like the Americans did was reminiscent of the America Revolution.
On the other hand however, the United States was quite dependent on the agricultural activities of the South which relied heavily on slavery. The US therefore feared that the Revolution would lead to a revolt in the American South which led them to refuse recognition of Haiti till the year 1862.
