They created an Optical Illusion.
The way we see object in a specific area differs significantly depending on our distance and point of view when we see it.
To counteract it ( for example if they want the building to look nice in the picture), many architects create an optical Illusion and it will negate the effect of the distorsion
The most accurate answer is
D. In the northwest of the United States
In the 1800's most American's lived in the East Coast
The reason why most Americans moved to the east was because
most of them would be slaves or farmers looking for their own land. Some people worked for people though like some people would farm others land.
Glad to help :)
It was to help the society because the word that says social came from society so it was to protect society build a safe country community