Tanzania is a nation.
The National Assembly of Tanzania ( Bunge la Tanzania ) and the President of the United Republic make up the Parliament of Tanzania . Tanzania . Parts of the country are in Southern Africa . Tanzania is a presidential constitutional republic , and since 1996 , its official capital city has been Dodoma , where the President 's Office , the National Assembly , and some government ministries are located . Elections for president and all National Assembly seats were last held in October 2015 . A highly multilingual country , Swahili is used in parliamentary debate , in the lower courts , and as a medium of instruction in primary school ; and English is used in foreign trade , in diplomacy , in higher courts , and as a medium of instruction in secondary and higher education , although the Tanzanian government plans to discontinue English as a language of instruction altogether .