In the Out of the foxholes episode OOTF21 Indy mentioned that the German attack on the phosphorus production of the island of Nauru in December 1940 caused problems for agriculture in Australia and New Zealan for several months. That leads to my question:
How big were the problems for the Alies, especially Australia and New Zealand, caused by the loss of Nauru with its phosphorus mines, when Japan conquered Nauru in August 1942?
P.S. the Japanese conquest of Nauru was not mentioned in the weekly episodes of August 1942.
Neither was Nauru mentioned in a War against humanity episode.
https://www.youtube.com/watch?v=KrKW9HLpAAI&list=PLsIk0qF0R1j4fP7wN99AtQEt4_oEzA0G7&index=313