Because Killicks began to treat Janie more like a slave or working assistant than a wife.
Explanation:
Despite her arranged marriage with Killicks being for his property and job stability, Killicks and Janie's opinions differ on how love is expressed. Janie does not find Killicks attractive or clean, and this causes issues within their relationship.
Janie's marriage to Logan is a disappointment because he is a rich and conceited man. he is not a passionate man. he beats her and makes her work like a mule.
This passage is meant to invoke a sense of national unity towards a common enemy. Wars are often seen as uniting in the sense that they bring people in a nation together.
