irrigation project while employed in the service of King Zhuang of Chu (died 591 BC) Lost-wax casting is spread to Ancient Greece Atom:The first mention of atoms is found in India. Rishi Kanada, Indian Philosopher and natural scientist speculated the existence of Anu or atoms. The oldest surviving map of the world, the Imago Mundi, is made in Babylon. Sovereign States See: List of sovereign states in the 6th century BC. References Sources -4 -94