How is the spread of the potato related to the increase in population in the Old World?
a)The potato grows easily in cold, harsh climates, which meant it grew well in northern Europe, providing a dependable food source that led to an increase in population.
b)The potato grows easily in warm, controlled environments, which meant it grew well everywhere except northing Europe, leading to an increase in population.
c)The potato does not correlate with an increased population.
d)The potato does not grow easily outside of the Andes, which means it did not lead to an increased population in the Old World.