What is District Four's industry in the Hunger Games?
District 4 is one of the wealthiest districts of Panem. Its industry is fishing, which is useful for tributes in the Hunger Games as they have experience in using nets and tridents, making fishhooks from scratch, swimming, and identifying edible sea life. In Catching Fire, Katniss notices during her Victory Tour that District 4, along with 3 and 8, seemed quite happy to see her, meaning that District 4 is a rebellious district, and also how the victors from this district pledged loyalty to the rebellion and Katniss Everdeen.
Being one of the wealthiest districts, District 4 tends to produce Career Tributes, who volunteer to participate in the Hunger Games. This is also the case for districts 1 and 2. These children are raised and trained to win the Games, making them stronger and much more capable of winning than the average tribute (although this is illegal). However, in the films, nothing was mentioned about tributes from District 4 being Careers. The bread from District 4 is a salty, fish-shaped loaf, tinted green by seaweed. Their source of income is fishing and kids are trained for these jobs at a young age, giving them an advantage in the Hunger Games. According to The Hunger Games Adventures, District 4 is located on the west coast of Panem just to the southeast of District 7. In the Catching Fire film, a pretty District 4 girl with blonde hair and brown eyes looks up at Katniss and tells her "One day, I'm going to volunteer. Just like you did.", implying that District 4 citizens may be in favor of the Hunger Games, similar to districts 1 and 2, or that the girl was just a fan of Katniss Everdeen and wanted to be like her.