Gradually, the boys become less and less civilized and more and more savage. Trace the progression that Golding sets out for us.?this is a...

When the boys first come together on the island, there are
all kinds of signs of civilization.  The choir boys led in a procession, wearing
uniforms, the idea of a conch being a symbol of cooperation and attention so that the
boys can use it and if they have it, it is their turn to speak, all of these are signs
of civilization and order.

There are small signs of a
breakdown at first, boys wanting to hunt or whining and crying, then the little kids
going to the bathroom where it is convenient instead of in the designated area, the
worries about a beast, etc.

These start to build as there
is a clear conflict between the leadership style and objectives of Ralph and Jack and
this drives the story until the two groups split
apart.

There are several instances that demonstrate the
final breakdown, the killing and maiming of the pig, then the killing of Simon, then
probably the last straw is the killing of Piggy as he stood for the aspects of
civilization like science and reason.