How the potato changed the world

In pretty significant ways, some might argue:

Many researchers believe that the potato’s arrival in northern Europe spelled an end to famine there. (Corn, another American crop, played a similar but smaller role in southern Europe.) More than that, as the historian William H. McNeill has argued, the potato led to empire: “By feeding rapidly growing populations, [it] permitted a handful of European nations to assert dominion over most of the world between 1750 and 1950.” The potato, in other words, fueled the rise of the West.

It would be unusual to think that Europe owes its imperial dominance to the humble potato. But, hey: history's weird like that.