Under such circumstances the number of the inhabitants of that State could never much increase. For as all our actions imitate nature, and it is neither natural nor possible that a puny stem should carry a great branch, so a small republic cannot assume control over cities or countries stronger than herself; or, doing so, will resemble the tree whose boughs being greater than its trunk, are supported with difficulty, and snapped by every gust of wind. As it proved with Sparta. For after she had spread her dominion over all the cities of Greece, no sooner did Thebes rebel than all the others rebelled likewise, and the trunk was left stripped of its boughs. But this could not have happened with Rome, whose stem was mighty enough to bear any branch with ease. It was, therefore, by adding to her population, and by, adopting certain other methods presently to be noticed, that Rome became so great and powerful. And this is well expressed by Titus Livius, in the words, “_Crescit interea Roma Albae ruinis_.” CHAPTER IV.—_That Commonwealths have followed three Methods for extending their Power_. Any one who has read ancient history with attention, must have observed that three methods have been used by republics for extending their power. One of these, followed by the old Etruscans, is to form a confederation of many States, wherein none has precedence over the rest in authority or rank, and each allows the others to share its acquisitions; as do the States of the Swiss League in our days, and as the Achaians and Etolians did in Greece in earlier times. And because the Etruscans were opposed to the Romans in many wars, that I may give a clearer notion of this method of theirs, I shall enlarge a little in my account of the Etruscan people.