Olduvai Gorge

Background: Shortly after independence, Tanganyika and Zanzibar merged to form the nation of Tanzania in 1964. One-party rule came to an end in 1995 with the first democratic elections held in the country since the 1970s. Zanzibar's semi-autonomous status and popular opposition have led to two contentious elections since 1995, which the ruling party won despite international observers' claims of voting irregularities.