Ten things you need to know about Africa Day

1. Seventeen countries gained independence from European colonisers between 1958 and 1963, and to mark their liberation, several states starting celebrating African Liberation Day around that time.

2. The newly-liberated countries felt the need to express solidarity with one another, and in May 1963, 32 African countries met in Addis Ababa to form the Organisation of Africa Unity (OAU). It was a major political force on the continent until the 1990s.

3. Since 1963, 21 more states have joined, notably South Africa, who only became part of the organisation in 1994 following the end of white minority rule.