Chapter X of John Locke’s 2d Treatise on Government: “Of Civil Government, “Of the Forms of a Commonwealth” is only two sections long— Sections 132 and 133. It simply details different forms of government and their operation from John Lockes’ point of view. The best way I could think of to illuminate this chapter was by providing links to the Wikipedia article for each form of government John Locke mentions. The links are on the labels of each form of government. These Wikipedia articles are fascinating.
For good measure, let me also provide links for the Wikipedia articles on Government and State (polity). What John Locke calls a “commonwealth” is what most political science literature calls a “state” in the sense of a polity.
Here are Sections 132 and 133 with the other links:
§. 132. THE MAJORITY having, as has been shewed, upon men’s first uniting into society, the whole power of the community naturally in them, may employ all that power in making laws for the community from time to time, and executing those laws by officers of their own appointing: and then the form of the government is a perfect democracy: or else may put the power of making laws into the hands of a few select men, and their heirs or successors; and then it is an oligarchy: or else into the hands of one man, and then it is a monarchy: if to him and his heirs, it is an hereditary monarchy: if to him only for life, but upon his death the power only of nominating a successor to return to them, an elective monarchy. And so accordingly of these the community may make compounded and mixed forms of government, as they think good. And if the legislative power be at first given by the majority to one or more persons only for their lives, or any limited time, and then the supreme power to revert to them again: when it is so reverted, the community may dispose of it again anew into what hands they please, and so constitute a new form of government: for the form of government depending upon the placing the supreme power, which is the legislative, it being impossible to conceive that an inferior power should prescribe to a superior, or any but the supreme make laws, according as the power of making laws is placed, such is the form of the commonwealth.
§. 133. By commonwealth, I must be understood all along to mean, not a democracy, or any form of government, but any independent community, which the Latins signified by the word civitas, to which the word which best answers in our language, is commonwealth, and most properly expresses such a society of men, which community or city in English does not; for there may be subordinate communities in a government; and city amongst us has a quite different notion from commonwealth: and therefore to avoid ambiguity, I crave leave to use the word commonwealth in that sense, in which I find it used by king James the First; and I take it to be its genuine signification; which if any body dislike, I consent with him to change it for a better.
For links to other, more substantial John Locke posts, see these John Locke aggregator posts: