<Tr> <Td_colspan="2"> <Ul> <Li> Pearl Harbor </Li> <Li> Niihau </Li> <Li> 1st Midway </Li> <Li> Johnston and Palmyra </Li> <Li> 2nd Midway </Li> <Li> </Li> <Li> 3rd Midway </Li> </Ul> </Td> </Tr> <Ul> <Li> Pearl Harbor </Li> <Li> Niihau </Li> <Li> 1st Midway </Li> <Li> Johnston and Palmyra </Li> <Li> 2nd Midway </Li> <Li> </Li> <Li> 3rd Midway </Li> </Ul> <Li> Johnston and Palmyra </Li> <Table> <Tr> <Th_colspan="2"> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> Japanese offensives, 1940--1942 </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> French Indochina </Li> <Li> Thailand </Li> <Li> Malaya </Li> <Li> Borneo </Li> <Li> Pearl Harbor </Li> <Li> Hong Kong </Li> <Li> Philippines </Li> <Li> Guam </Li> <Li> Wake </Li> <Li> Dutch East Indies </Li> <Li> New Guinea </Li> <Li> Singapore </Li> <Li> Burma </Li> <Li> Australia </Li> <Li> Indian Ocean </Li> <Li> Solomons </Li> <Li> Coral Sea </Li> <Li> North America </Li> </Ul> </Td> </Tr> </Table>

Why did japan attack pearl harbor and what was the result