The Wealth of Nations by Part 4 Chapter 7 Page 51

In three of the provinces of New England the oldest has only a double share, as in the Mosaical law. Though in those provinces, therefore, too great a quantity of land should sometimes be engrossed by a particular individual, it is likely, in the course of a generation or two, to be sufficiently divided again. In the other English colonies, indeed, the right of primogeniture takes place, as in the law of England. But in all the English colonies the tenure of the lands, which are all held by free socage, facilitates alienation, and the grantee of any extensive tract of land generally finds it for his interest to alienate, as fast as he can, the greater part of it, reserving only a small quit-rent. In the Spanish and Portuguese colonies, what is called the right of Majorazzo takes place in the succession of all those great estates to which any title of honour is annexed.