What do the suits on a deck of cards represent?
Each of the suits on a deck of cards represents the four major pillars of the economy in the middle ages: heart represented the Church, spades represented the military, clubs represented agriculture, and diamonds represented the merchant class.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What do the suits on a deck of cards represent?
### Input: 
### Response: Each of the suits on a deck of cards represents the four major pillars of the economy in the middle ages: heart represented the Church, spades represented the military, clubs represented agriculture, and diamonds represented the merchant class.