Since winning their independence during the second half of the twentieth century, some former European colonies in Africa have disputed the exact location of national borders. These disputes have often been related to the location of valuable natural resources, such as petroleum and natural gas. Which of the following is one reason for these disputes?

A.
The leaders of the colonial powers did not believe Africans would fight other Africans.
B.
The leaders of the colonial powers did not believe Africa had any valuable resources.
C.
Colonial powers paid little attention to the location of natural resources when drawing national borders.
D.
Colonial powers intentionally drew national borders so as to create conflict between former colonies.

C. Colonial powers paid little attention to the location of natural resources when drawing national borders.

Shortly after the end of World War II, Germany was divided into two countries. Which event contributed most to the reunification of Germany in 1990?

A.
the end of the Vietnam War
B.
the election of Margaret Thatcher
C.
the end of the Cold War
D.
the election of Ronald Reagan

C. The end of the Cold War

Although most of South America was colonized by the Spanish and the Portuguese, one region was colonized by the British, Dutch, and French. What is this region called?

A.
the Pampas
B.
the Amazon
C.
the Guianas
D.
the Andes

C. the Guianas