Answer:
Proteins and carbohydrates
Explanation: I just took this test.
The main reason is that the North wasn't as agricultural so they didn't need slaves working the fields they where more mercantilist ( an economic system used to boost the nation's wealth using trade.)
<span>An increase in the demand for bubble gum might be caused: by </span>the fact that blowing bubbles is now a popular activity
In marketing, bubble gum is considered as an Unsought product, which is a type of product that wouldn't be bought by customers under normal conditions. This type of products usually had a really high demand when it still becomes a trend and will dramatically decrease as soon as the trend faded out.
