<Tr> <Th> Date commenced </Th> <Td> 1 November 1957 </Td> </Tr> <Tr> <Th> Date repealed </Th> <Td> 26 October 1966 </Td> </Tr> <Tr> <Th> Administered by </Th> <Td> Minister of the Interior </Td> </Tr> <Tr> <Th_colspan="2"> Repealing legislation </Th> </Tr>

When was the group areas act passed and why