<Tr> <Td> Republic of the Congo </Td> <Td> 15 August 1960 </Td> <Td> Fulbert Youlou </Td> <Td> - </Td> </Tr> <Tr> <Td> Gabon </Td> <Td> 17 August 1960 </Td> <Td> Léon M'ba </Td> <Td> - </Td> </Tr> <Tr> <Td> Nigeria </Td> <Td> Colony and Protectorate of Nigeria British Cameroons </Td> <Td> United Kingdom </Td> <Td> 1 October 1960 1 June 1961 1 October 1961 </Td> <Td> Nnamdi Azikiwe </Td> <Td> - </Td> </Tr> <Tr> <Td> Mauritania </Td> <Td> French Equatorial Africa </Td> <Td> France </Td> <Td> 28 November 1960 </Td> <Td> Moktar Ould Daddah </Td> <Td> - </Td> </Tr>

Which west african country gained independence from france in 1960