Second choice-contain unrealistic elements
The Mexican War: 1846 - 1848
Obviously, the opponent was Mexico. This war (as seen above) lasted for two years.
C. the Size of the Market.
The reason is that you moved your Lemonade Stand to a more populated area. The consumer's interest in your lemonade hasn't changed, the only thing that changed is the amount of people in the area seeing the stand. You have thus expanded your market to a larger group.