Who discovered selective breeding and natural selection?

Selective breeding, also known as artificial selection, has been practiced for thousands of years by farmers and breeders, but it was notably studied and formalized by Charles Darwin in the 19th century. Natural selection, the process by which organisms better adapted to their environment tend to survive and reproduce, was also popularized by Darwin in his 1859 work, "On the Origin of Species." While Darwin's work laid the foundation for our understanding of these concepts, the principles of selective breeding were utilized long before him.