When Piggy spoke out against the vote, which had gone in favour of a belief in ghosts, Jack told him, "You shut up, you fat slug." Jack then turned on Ralph and said "And you shut up! Who are you anyway?..." When Ralph protested that Jack was breaking the rules Jack shouted, "Bollocks to the rules! We're strong--we hunt! If there's a beast, we'll hunt it down! We'll close in and beat and beat and beat--!" Then he jumped off the platform and led the rest of the boys on to the beach were they began chanting and doing a 'pig dance.'
Chat with our AI personalities
Because in the end of the chapter, Jack's tribe attacks Ralphs tribe. Piggy thought they were after the conch (The Shell) but instead, they stole Piggy's glasses for fire usage (The Glasses)
he is homesick, and stressed
Piggy's glasses
Jack called the meeting under the pretence of discussing the encounter with the beast on the mountain top but really with the intention of attempting to depose Ralph as leader and installing himself as the new leader of the boys.
You should probably read the book instead of asking the Internet to do your homework for you. Reading is good for you as a human being, you won't regret doing it :)