Tanzania – Wikipedia

Etymology. The name “Tanzania” was created as a clipped compound of the names of the two states that unified to create the country: Tanganyika and Zanzibar. It comprises the first three letters of the two states, “Tan” and “Zan” as well as the only two vowels in the names of two states, “I” and “a” to form Tanzania.

: https://en.wikipedia.org/wiki/Tanzania