Wallace
accident
It was where he developed his theory. The Galapagos are considered the "Laboratory of Evolution." Evolution is easily observable here.
The theory was developed independently by Charles Darwin and Alfred Russel Wallace.
The public, due mostly to religious reasons, was not ready for any transmutational theory and Lamarck's theory had no evidence to support it thus scientists of the time did not pay it much attention. Also Cuvier was Lamarck's enemy and denigrated the theory Lamarck developed.
Marshal
Plate tectonic theory was officially developed in 1912. It was developed by Alfred Wegener through his continental drift theory.
Francis Galton developed the theory of Eugenics
john dalton developed the atomic theory , which he published in 1803
Adam Smith developed the theory of classical capitalism.
Albert Einstein developed the theory of relativity. He first proposed the special theory of relativity in 1905 and later developed the general theory of relativity in 1915. These theories revolutionized our understanding of space, time, and gravity.
Louis Pasteur developed the germ theory for disease!
The instrument that was necessary for Cell Theory to be developed is the microscope.
The Geocentric Theory was developed by Greek astronomers. The theory was that celestial bodies moved around Earth in circular paths.
British scientist Charles Darwin (1809-1882) developed the theory of evolution (the theory that living organisms developed slowly over long periods of time).
The theory of relativety
Price theory can be referred to as Micro economics and income as Macro.