Which of the Following Describes Most of South America in the Second

 Which of the following describes most of South America in the second half of the nineteenth century?

A) Regional diversities had to be overcome to create strong centralized governments.
B) Conservatives and liberals clashed for power.
C) Many nations,like Mexico faced pressures from external powers such as the United States. 
D) An ovverreliance on exports of raw materials and imports of industrial goods and technologies,hindered the development of integrated national economies. 
E) All of the answers are correct.