Douglass says that "it is not uncommon for slaves even to fall out and disagree among themselves about the relative goodness of their masters." why did slaves praise their masters in this way, according to douglass?
a. they were treated better when they worked for richer masters than when they worked for poorer masters.
b. they hoped that their masters would hear about their comments and reward them.
c. they felt better about themselves if they worked for a richer master than others worked for.
d. they enjoyed arguments and fights as a break from the drear

Read this excerpt from "edward jenner and the history of smallpox and vaccination.” smallpox was introduced to europe sometime between the fifth and seventh centuries and was frequently epidemic during the middle ages. the disease greatly affected the development of western civilization. the first stages of the decline of the roman empire (ad 108) coincided with a large-scale epidemic: the plague of antonine, which accounted for the deaths of almost 7 million people. the arab expansion, the crusades, and the discovery of the west indies all contributed to the spread of the disease. unknown in the new world, smallpox was introduced by the spanish and portuguese conquistadors. the disease decimated the local population and was instrumental in the fall of the empires of the aztecs and the incas. similarly, on the eastern coast of north america, the disease was introduced by the early settlers and led to a decline in the native population. before it reached the new world, smallpox played a role in