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.
There is no key to civilization. The concept that native americans did not have a civilization or were not civilized is one only supported by the egotism and arrogance of the empirical profit oriented "conquerers" who have worked to eradicate all cultures that conflict with profits. The key to western civilization that allowed them to kill off the majority of the natives was a lack of respect for life and insane drive for control, ownership and dominance, to which the peaceful and sophisticated Natives would not stoop.
Answer:
A person that has escaped from prisons
B. Because even with many issues that plagued the Roman Empire economically and politically, By the later years of the empire the Roman military was mainly comprised of trained Barbarian soliders who were inferior to earlier Roman soliders causing a significant decrease in the Roman Empires's Military capablities so many barbarian tribes that began to grow such as the Huns, Vandals, Goth etc. Put immense pressure on the Empire, driving them into the ground economically and causing many issues within the government and eventually being sacked, thus marking the end of the Roman Empire. Sorry for the wall of text but hope this helped :)