Piggy's glasses
Ralph wanted Piggy, the twins and himself to tidy up and wear their clothes, hoping by doing so he could remind Jack and his tribe that they weren't really a tribe of savages at all but simply English schoolboys.
The last line of dialogue which Piggy spoke was on the causeway. I quote directly from the book.... A great clamour rose among the savages. Piggy shouted again. "Which is better-- to have rules and agree, or to hunt and kill?"
Ralph, Sam and Eric, and Piggy = To tend to the fire and get rescued. Jack and the Savages = To have fun
raining and storming out
Roger is standing guard with the other biguns and is prepared to enforce Jack's authority by using intimidation and violence if necessary. He relishes the power and control he has in this moment, eager to assert his dominance over the others.
Piggy's glasses
The tribe of savages steals Piggy's glasses from Ralph. These glasses are used to start fires in the story.
Ralph wanted Piggy, the twins and himself to tidy up and wear their clothes, hoping by doing so he could remind Jack and his tribe that they weren't really a tribe of savages at all but simply English schoolboys.
The last line of dialogue which Piggy spoke was on the causeway. I quote directly from the book.... A great clamour rose among the savages. Piggy shouted again. "Which is better-- to have rules and agree, or to hunt and kill?"
Piggy and Ralph are in a last attempt to stop the savagery at the Castle Rock, where the savages have camped. Roger is atop the castle as the others argue, and Roger pivots a lever that causes a boulder to fall, and it falls onto Piggy, shattering the conch and knocking him over the edge to his death.
Ralph, Sam and Eric, and Piggy = To tend to the fire and get rescued. Jack and the Savages = To have fun
raining and storming out
Well in chapter 10 Jack and his tribe of savages invade Ralph's tribe (made of up Ralph, Sam and Eric, Piggy, and one/two littluns) in order to steal Piggy's glasses, which is overall the power to start a fire on the island. Jack might have mentioned this plan in chapter 9 so I'm hoping this is the right answer to your question.
Yes, in "Lord of the Flies," Jack and some of his followers attack Ralph and Piggy at the shelters, resulting in Piggy's death and the theft of the conch. This symbolizes the complete breakdown of order and civilization on the island.
In a word, no. Piggy is an outsider who acts, talks and thinks differently from the other boys. His big speech on the causeway leading to Castle Rock proved just how out of touch he was. He talked down to Jack's tribe, as if he were an elderly school teacher chastising a group of unruly schoolboys. The boys were indeed just unruly schoolboys but in their eyes they were a tribe of savages and anyone with any degree of understanding would have realised that they wouldn't appreciate being talked down to, especially by a fat kid who they had a low opinion of anyway. Piggy also told the boys that it would be better to be in Ralph's group rather than become a gang of painted savages, when it was blatantly obvious that they had already made the choice to become savages. Piggy's total lack of understanding of the other boys served only to annoy and irritate them rather than persuade them to be sensible, as was his obvious intent. Piggy essentially signed both his own and Ralph's death warrants by virtue of his insensitivity and lack of understanding.
During Piggy's plea for a return to decency, Roger is busy rolling rocks down the mountainside, showing his disregard for Piggy's words and further highlighting his cruel and sadistic nature.