Which of these was not a issue that made fighting difficult in the pacific theater?

There were a number of issues that made fighting difficult in the Pacific theater, including:

* The vastness of the Pacific Ocean: The Pacific Ocean is the largest ocean in the world, and it was a major challenge for the Allies to transport troops and supplies across it.

* The lack of natural resources: The Pacific theater was largely devoid of natural resources, which made it difficult for the Allies to sustain their troops.

* The climate: The climate in the Pacific theater was often hot and humid, which made it difficult for the troops to fight.

* The terrain: The terrain in the Pacific theater was often difficult to navigate, with dense jungles and steep mountains.

However, there were some issues that did not make fighting difficult in the Pacific theater. For example, the Allies had a significant advantage in air power, which they used to great effect in the war. Additionally, the Allies had a well-developed system of logistics, which allowed them to keep their troops supplied with food and ammunition.