What Caused The Downfall of Sparta?

What Caused The Downfall of Sparta? <b><i>Hypothesis: Sparta collapsed because they did not allow the helots to fight in battle</i></b> <b>The Beginning of Sparta</b> In about 100 BCE, the Dorians invaded Greece from the North. During the Dark Ages, the Dorians made their way south, capturing the inhabitants of the lands they passed through as helots. At the beginning of the Dark Ages, it is thought that there were many …

…Unwin Ltd., London, England, 1975 <li>Boardman, J., Griffin, J., Murray, O., Greek and the Hellenistic World, Oxford University Press, Oxford, England, 1992 <li>Forrest, W.G., A History of Sparta 950-192 BC, Hutchinson & Co. (publishers) Ltd., London, England, 1968 <li>Hennessy, D., Studies In Ancient Greece, Thomas Nelson Australia, South Melbourne, Australia, 1991 <li>Star, C. G., The Ancient Greeks, Oxford University Press, Oxford, England, 1971 <li>Forrest, W.G., A History of Sparta 950-192 BC, London, England, 1968, p.138