A head of state (or chief of state) is the public persona of a sovereign state. The specific naming of the head of state depends on the country's form...

executive branch, the head of government is the highest or the second-highest official of a sovereign state, a federated state, or a self-governing colony...

a list of the heads of state of Nigeria, from independence in 1960 to the present day. The current constitution of Nigeria has the president of Nigeria...

of current heads of state and heads of government. In some cases, mainly in presidential systems, there is only one leader being both head of state and...

The following is a list of women who have been elected or appointed head of state or government of their respective countries since the interwar period...

Head of State (1835–1837) Juan Mora Fernández, Head of State (1837) Manuel Aguilar Chacón, Head of State (1837–1838) Braulio Carrillo Colina, Head of...

This article lists the heads of state of Afghanistan since the foundation of the first modern Afghan state, the Hotak Empire, in 1709. The Hotak Empire...

Biafra (/biˈæfrə/ bee-AF-frə), officially the Republic of Biafra, was a partially recognised state in West Africa that declared independence from Nigeria...

Heads of state throughout the world and at all periods of history may be ranked according to characteristics such as length of time holding that position;...

This is a list of the heads of state of Ghana, from the independence of Ghana in 1957 to the present day. From 1957 to 1960 the head of state under the Constitution...