Fence

A fence differs from a wall up not having a solid foundation along its whole length. Alternatives to fencing include a ditch.

Servitudes are legal arrangements of land use arising out of private agreements. Under feudalism most lands in England were cultivated in common fields, where peasants were allocated strips of arable land that were wont to support the requirements of the local village or manor. By the sixteenth century, the expansion of population and prosperity provided incentives for landowners to use their land in additional profitable ways. Many fields were aggregated and closed by large farmers either through negotiation among one another or by lease from the owner to maximize productivity. Fences repair service redefined the means by which land is employed leading to the fashionable law of servitudes. 

In the US the earliest settlers claimed land by simply fencing it in. Later because the American government formed unsettled land became technically owned by the govt. and programs to register land ownership developed, usually making raw land available for low prices or for free of charge if the owner improved the property including the development of fences. As the remaining vast tracts of unsettled land were often used as a commons or within the American West open range as degradation of habitat developed and that's why overgrazing and a tragedy of the commons situation arose common areas began to either be allocated to individual landowners via mechanisms like the Homestead Act and Desert Land Act and fenced in or if kept publicly hands leased to individual users for limited purposes with fences built to separate tracts of public and personal land.