The role of trade in statecraft

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Proposition

Some states have grown in power without land but just due to the strength of trade.

And because there is no Territory under the Dominion of one Common-wealth, (except it be of very vast extent,) that produceth all things needfull for the maintenance, and motion of the whole Body; and few that produce not something more than necessary; the superfluous commodities to be had within, become no more superfluous, but supply these wants at home, by importation of that which may be had abroad, either by Exchange, or by just Warre, or by Labour: for a mans Labour also, is a commodity exchangeable for benefit, as well as any other thing: there have been Commonwealths that, having no more territory than hath served them for habitation, have nevertheless not only maintained, but also increased their power, partly by the labour of trading from one place to another, and partly by selling the manufactures, whereof the materials were brought in from other places.

Hobbes, Lev XXIV 4