Final answer:
The Universe, based on the Doctrine of Humours, is composed of four elements: earth, air, fire, and water. This concept originated from Greek philosophers such as Empedocles and Aristotle.
Step-by-step explanation:
The Universe, based on the Doctrine of Humours, is composed of four elements: earth, air, fire, and water. This concept originated from Greek philosophers such as Empedocles and Aristotle. They believed that these elements were the fundamental building blocks of all physical matter. The theory of humours provided a framework for understanding the behavior of matter during ancient times.This understanding was integral to the beliefs of Presocratic philosophers like Empedocles and was later incorporated into medical theories by Galen of Pergamon, who associated these elements with the four humours of the body.