"King resorted to a plan for increasing the inhabitants... He opened an asylum. Thither fled, from the surrounding peoples, a miscellaneous rabble, without distinction of bond or free, eager for new conditions; and these constituted the first advance in power towards that greatness." - Livy, "The History of Rome"
"After the conquest of Italy, Rome could mobilize 700 thousand troops (Romans and their allies). That strength could not be matched by any other army. Neither Carthage nor Macedon could mobilize a force, that would even roughly match Rome's numbers." - M. Jaczynowska, "Historia Starożytnego Rzymu"