Why did Tanzania adopt a single party system?

Tanzania adopted a single-party system primarily to promote national unity and stability following its independence from colonial rule in 1961. The leadership, particularly under President Julius Nyerere, believed that a single-party system would help prevent ethnic and regional divisions that could arise in a multi-party context. This approach aimed to streamline governance and facilitate the implementation of socialist policies, aligning with Nyerere's vision for a cohesive and egalitarian society. The system remained in place until the country began transitioning to a multi-party system in the early 1990s.