Pragmatism is a philosophical movement that originated in the United States in the 19th century in response to the rise of scientific inquiry. It was influenced by Charles Darwin's theory of evolution and developed by thinkers including Charles Sanders Peirce, William James, and John Dewey. Pragmatism defines truth as whatever works successfully to solve problems. It views people as social beings that exist within a pluralistic society composed of various interacting groups, and that society's role is to control the consequences of these primary groups.