The explosion of european immigration into the united states in the late 1800s can best be explained by :
a. a wide variety of entry points into the united states.
b. an increase of asian immigration through angel island.
c. pull factors in europe and push factors in america.
d. push factors in europe and pull factors in america.

The correct answer is the following: option D. The explosion of European immigration into the United States in the late 1800's can be best explained by the appearance of push factors in Europe and pull factors in America. From 1865 many Europeans began moving to the United States. This came as a consequence of poverty, social class restriction and political environment between other push factors. The United States was a good option for immigrants due to its pull factors, such as new job opportunities, the possibility of owing land and a more peaceful political environment, where everyone could have a voice and an opinion.

disorders of the brain include both behavior disorders and other psychiatric illnesses. the primary difference between a behavior disorder and another type of psychiatric disorder is the presence of choice. psychiatric conditions are considered to be involuntary while in behavior disorders, choices are essential.

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