>>64070070
The explanations are easily available in the historiography, however hard that is for a spastic like you to decipher.
>Needed to safeguard Australia and it's vital sea lines of communication
>needed a modest starting point for a Pacific offensive with its own airfield to provide land based air cover
>Could not yet rely upon the USN entirely to do this. Carriers too precious after Coral Sea/Midway
>The Big Blue Fleet that can rampage over the Pacific providing it's own air cover does not exist yet
>IJN and Rabaul are still lethally dangerous and need to be reduced.