Xenia is the Greek concept of guest friendship, in which hosts and guests undergo a series of reciprocal actions , such as hospitality and gift giving. Homer’s Odyssey is centred around the activities of xenia. Xenia was a way of creating informal travel networks that meant the ability for individuals to travel safely in the ancient world. It has been also suggested that the Odyssey is about early Greek colonisation in the 8th century BC, and how Greeks interacted with non-Greeks in southern Italy, Sicily and the territories surrounding the Black Sea.