Jem was upset because Mr. Radley had just cut off Jem and Scout's only way of communicating with Boo.
Jem believes anything from the radley place is poisonous, etc so he askes scout to spit out the gum
Nathan Radley knows Boo has been leaving gifts there for the children so fills the hole in with cement. When the children enquire as to why he's doing this, he lies and says that the tree was dying and this would save it.
Jem and Scout wanted to leave a thank you letter for the person who gave them the presents. Now that the knot-hole was filled up by Mr. Nathan Radley, they cannot thank the person, which made him sad.
Scout's question upset Jem because it touched upon a sensitive issue in their community involving their father, Atticus, defending a black man in a racially charged trial. This upset Jem because it made him confront the harsh realities of racism and injustice in their society. There is no simple solution to this complex issue as it requires a deep understanding of societal attitudes, historical context, and empathy towards others.
Jem is upset with Mrs. Dubose's racist comments towards his father, so he retaliates by destroying her flowers as an act of rebellion. Jem is trying to stand up for his family and assert his own sense of justice in response to Mrs. Dubose's bigotry.
Tom Robinson, the prosecuted, was wrongfully convicted in the rape case. There was prejudice against him for being African American and Mayella lied. Jem was upset because he knew that the verdict was wrong. It was especially upsetting because Atticus was so invested in the case and he argued for Tom because it was the right thing to do, no matter what people said about it.
Jem is maturing and Atticus told him not to get upset about people making fun of himself so when Jem gets upset and ruins the plants Atticus makes him read to her because he knows it is a 'mature' thing for him to do, it teaches Jem to own up to what he did, Walk in someone else's shoes (underlying theme), and Atticus knows she's addicted to morphine and she might die, and also that she is alone and has no one to read to her.
Jem realizes that Boo Radley is kind and a protector when he leaves gifts for him and Scout in the knothole of a tree. He understands that Boo has been watching over them, showing that he cares for their well-being. Jem's perception of Boo changes from fear to compassion and gratitude.
Nathan Radley fills the tree hole with cement because Jem and Scout had been leaving items inside of it for Boo. Boo was taking the items and replacing them with his own home made items. Nathan Radley wanted to end the communication between Boo and the Finch siblings.
Mr. Nathan Radley fills the knothole with cement in order to prevent the children from receiving any more gifts from Boo Radley. This action is seen as a way to cut off the relationship between Boo and the Finch children.
What do you mean upset?
It Was On An Episode During The Week So I Think It Is Because Jem Had A Boyfriend Who Was Seventeen And Carl Was Still A Footballer. Jem's Boyfriend Was In His Debut Game And Carl Didn't Want Jem To Have A Boyfriend So He Tackled Jem's Boyfriend (Liam) And Broke His Leg. His Career Ended Before It Begun.He Never Played Again Because Carl Broke Liam's Leg And Ended His Career.