The definition of subsistence farming is "the farmers focus on growing food to feed themselves and their families.The typical subsistence farm has a range of crops and animals needed by the family to feed and clothe themselves during the year. Planting decisions are made principally with an eye toward what the family will need during the coming year, and secondarily toward market prices."
If Japan conquered European colonies there, it could also threaten the American controlled Philippine Islands and Guam.
I think it’s the second one if not then the first one don’t over think it k