Mali Federation
After the breakup of the Mali Federation, President Senghor and Prime Minister [[Mamadou Dia]] governed together under a parliamentary system. In December 1962, their political rivalry led to an [[1962 Senegalese coup d'état attempt|attempted coup]] by Prime Minister Dia. The coup was put down without bloodshed and Dia was arrested and imprisoned. Senegal adopted a new constitution that consolidated the President's power.