Read the excerpt from elie wiesel’s all rivers run to the sea.
it is unbelievable how fast people will adapt. it hurts to admit it, but within hours of first breathing the cattle car’s nauseating air, we began to feel at home. . mixed into my sadness there was undeniable excitement, for we were living a historic event, a historic adventure.
which theme is expressed in the passage?
people are not able to bear the heavy burdens of life.
people will tolerate difficult events while hoping for improvements.
people will persist even during the worst of times.
people are able to forget even the most severe pains.

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