The party that controlled the government of South West States after the 1979 General Elections was

After the 1979 General Elections in Nigeria, the party that controlled the government of the South West states, which were predominantly Yoruba-speaking areas, was the **Unity Party of Nigeria (UPN)**.

The **Unity Party of Nigeria (UPN)** was founded by Chief Obafemi Awolowo, a prominent Yoruba leader and politician, who had a significant influence in the South West region. The UPN was known for its emphasis on progressive ideologies, including free education and social welfare programs, which resonated strongly with the people of the South West.

Due to the party's strong presence and organization in the region, the UPN won the majority of votes in the South West states, allowing them to form the government in those areas. This success can be attributed to both the popularity of its founder and the alignment of its policies with the needs and aspirations of the South West people.