The President of the Republic of Angola is both head of state and head of government in Angola. The President picked a Prime Minister. Most of the decisions are made by the President.
Angola started having a President when they got independence from Portugal. Agostinho Neto was the first President.
In January 2010 the National Assembly decided the party with the most seats in the Assembly would become president. It was no longer a public vote. They also decided there would not be a Prime Minister. Instead the job will be done by the vice-president.