<Tr> <Td> Tumbler lock </Td> <Td> c. 5th century BC </Td> <Td> The tumbler lock, as well as other varieties of lock, was introduced in Greece in the 5th century BC . </Td> <Td> </Td> </Tr> <Tr> <Td> Gears </Td> <Td> c. 5th century BC </Td> <Td> Developed further than in prehistoric times for a variety of practical purposes . </Td> <Td> </Td> </Tr> <Tr> <Td> Plumbing </Td> <Td> c. 5th century BC </Td> <Td> Although there is evidence for Sanitation of the Indus Valley Civilisation, the ancient Greek civilization of Crete, known as the Minoan civilization, was the first civilization to use underground clay pipes for sanitation and water supply . Excavations at Olympus, as well as Athens, have revealed extensive plumbing systems for baths, fountains, and personal use . </Td> <Td> </Td> </Tr> <Tr> <Td> Spiral staircase </Td> <Td> 480--470 BC </Td> <Td> The earliest spiral staircases appear in Temple A in Selinunte, Sicily, to both sides of the cella . The temple was constructed around 480--470 BC . </Td> <Td> </Td> </Tr>

The contribution of greek in the development of science and technology