Yes it does look expensive...
Answer:
D. The act prepared available land in the West for planting.
Explanation:
Most countries dont need "justification" for joining a war, typically the only justification is a decision backing up allies, and under this definition, the US was justified, Japan had also initiated aggression againts the US, giving the US an incentive to join the war, so yes, its likely that they were justified in joining the war, for several reasons
Salt, aragonite, timber (forestry and conservation lands), arable land