Lycurgus setting up the great Rhetra majorly impacted Spartan society this can be seen by the writings of Herodotus, Xenophon, Plutarch and Aristotle. These writing we see that Lycurgus setting up the great Rhetra was important to Spartan society with the introduction of the militaristic way of life, the Agoge and the government.Source D shows Lycurgus implementing the agoge education system that trained the Spartans in discipline, fitness and obedience. This shaped Spartan society by having them focus on their military training from an early age means they will be better fitter stronger and faster. Source E shows that lycurgus focused on the parts of Spartan life that are making their life easy and made them live tougher to maintain the training that they put in when they were younger. This shaped Spartan society by keeping the soldiers tough. Source F shows Lycurgus created a government and laws built around the militaristic way of life with having the best elements of the other Greek governments.Kingship, oligarchy and democracy. This shaped Spartan society by giving them a democratic say in government while still having a king. The reliability of Source G Aristotle wrote in the 4th century BCE so he is contemporary yet he his highly critical coming from a viewpoint of an Athenian. So the source is considered reliable yet their is a little bias with Aristotle putting Sparta in a bad light.
Source D ‘as boys reached the age of seven, Lycurgus took charge of them all himself and distributed them into troops.’ Plutarch
Source E ‘Lycurgus then noticed that the spartans just like the rest of the Greeks were living at home realising that this is responsible for taking things too easily, brought the common messes out into the open’. Xenophon
Source F ‘[Lycurgus] changed all the laws and… established military organizations… as well as the ephors and elders’. Herodotus
Source G ‘One might suppose that as long as they are resectable men and sufficiently trained in manly virtue [the elders] would benefit the state, but it should be doubted’. Aristotle