Why is 1991 significant as a turning point in American history? A. It is the year the September 11 terrorist attacks occurred,
B. It is the year of the Berlin Airlift.
C. It marks the end of the Cold War
D. It represents the end of the Vietnam War.

What explains the increase in life expectancy in botswana? a. the increased availability of jobs and an improved economy b. access to antiretroviral drugs, hiv/aids education, and widespread hiv/aids testing c. a series of military takeovers that stabilized the political system and led to education reform and increased literacy rates d. a recent military coup that led to an improved healthcare system select the best answer from the choices provided.