Week topic

1. 
   Single Executive/Presidential Executive: This is a system whereby all executive powers of government are vested in the president. The president is the head of state, head of government and the commander-in chief of the armed forces. Examples of countries that practice this system include USA, Nigeria, Brazil, Chile, Tanzania, etc.
   

The Executive president of the federal republic of Nigeria

2. 
   Dual Executive/Parliamentary Executive: This is a system whereby one person is the head of state, while another person is the head of government. The head of state may be a monarch or ceremonial president, while the head of government is usually the prime minister. Countries that practice this system include Belgium, Italy, Sweden and Nigeria in the first republic.
   
3. 
   Collegiate Executive: It is a system in which a number of people form a council which rotates the chairmanship of the council and leadership of government in turns among its members. It was used during Olympio’s rulership in Togo.