Answer:
most often used to characterize informal public executions by a mob in order to punish an alleged transgressor, punish a convicted transgressor, or intimidate. It can also be an extreme form of informal group social control, and it is often conducted with the display of a public spectacle (often in the form of hanging) for maximum intimidation.[1] Instances of lynchings and similar mob violence can be found in every society
Yes because "the box of toys has been tipped over" and "the children will pick it up" can stand on their own, and since they are combined into one sentence it is a compound sentence.
Maybe some medical condition :)
In AP tests, yes. But in general, no