Cracked white chicken shells form a crumbling ancient Roman amphitheater

2x2 grid, do this for 4 fallen empires, 16:9 Input = Eggshell Category. Identify 4 distinct shells (e.g., White Chicken Shells, Brown Shells, Speckled Quail Shells, Blue Duck Shells).  > Function Draw($ Eggshell, $ Fallen_Empires)  > Anchor: [Fallen_Empires]::Eggshell]::4  > Morphology: A crumbling ancient [Fallen_Empires] erected from cracked [Eggshell] — columns, arches, and amphitheater tiers formed from curved, fragile fragments.  > Material Physics: The porous calcium texture, jagged crack lines, and thin translucent edges of [$Eggshell] under dusty golden archaeological light, membrane and grit in fine macro.