Who got into a fight in the beginning of chapter 3 of how o kill a mockingbird and why

Jem and Scout get into a fight about how Walter Cunningham has no food.

By a story because it is like telling an example of how the lesson will affect you.

Ibelieve this is the part where ulysses reveals his true identity to his faithful servants eumaeus and philaetius: his ragged vest then drawn aside disclosed the sign conspicuous, and the scar exposed: eager they view'd, with joy they stood amazed with tearful eyes o'er all their master gazed: these servants know ulysses by the scar he got when he was a child - so when he showed them the mark, they immediately knew this is truly their master and they hugged him, finally starting to believe his words.