History and Simultaneity

The primary structure of a History, as is the case with any narrative, is Linear, constituted by a sequence of points, e. g. the rulers of a polity.  But, how instructive a History is depends on Simultaneity, i. e. comprehensiveness of theme.  For example, for a Marxist, a History of the Means of Production is more illuminating than one recounting the exploits of a regime, since the Means of Production in a society defines its Relations of Production, and thus incorporates greater breadth of what is transpiring at any moment.  Thus, a bona fide World History is constituted by more than events occurring at a variety of locations around the World.  Rather, the criterion of Simultaneity requires appropriate breadth of its elements, and, hence, that they involve as much of the World as possible.  In other words, hitherto, at least, the two World Wars, and the formation of the United Nations, but not much else, are the constituents of a real World History.