The United Republic of Tanzania is a unitary sovereign state formed in 1964 via a union between the mainland (formerly Tanganyika) and the Zanzibar archipelago. Zanzibar maintains a semi-autonomous status with its own separate President, Constitution, and Parliament to manage domestic issues (such as tourism and local land policy). However, “Union Matters”, including foreign policy, national defense, and international trade agreements are managed strictly by the central government of Tanzania.