After Bosphourus all polluted and lost its water, thousands of mice appeared and started to create habitat of their own.
Everthing people and mice wanted was to become distant from each other.
Mice took water’s place and enlarge their habitat by digging and nibbling the land.
People kept building and constructing to fulfil their need of settle and stay away from mice
Hence 2 new occupation appeared: Builders – people – , Rodents – mice – .