<Table> <Tr> <Td> </Td> <Td> c. 100 AD--c. 940 AD </Td> <Td> </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> c. 100 AD--c. 940 AD </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="3"> Aksum, shown in magenta </Td> </Tr> <Tr> <Td_colspan="2"> Capital </Td> <Td> Aksum </Td> </Tr>

What led to the decline of the kingdom of axum