A National Look at the Use of Congregate Care in Child Welfare. congregate care.
The idea of a spherical Earth appeared in Greek philosophy with Pythagoras (6th century BC), although most pre-Socratics (6th â 5th century BC) retained the flat Earth model. Aristotle provided evidence for the spherical shape of the Earth on empirical grounds by around 330 BC.
One of the first western models of the Earth that wasn't flat was that of the greek thinker Anaximander (610 B.C. - 546 B.C.). He thought the Earth was a cylinder. However Ancient Greeks knew the earth was round as early as the 6th century B.C.