It's not a person, never heard of a place called 'happiness', or I would go there.
It has to be a thing. Meaning it's a noun.
I go with "Whom". It makes sense.
Answer:
Have you ever had to choose between what you thought was right and your family? Carter Druse has to make this choice in Ambrose Bierce's short story A Horseman in the Sky. The protagonist chooses to defy his family and his Southern homeland by siding with the North in this story set during the Civil War. In an intense scene, Druse must shoot an enemy soldier to protect his men. It is only revealed at the end that the Confederate officer he shot was his father.
Explanation:
The answer to the blank is More-developed countries.
