What aspects of the social and scientific environment of the early and mid-19th century contributed

What aspects of the social and scientific environment of the early and mid-19th century contributed, in your opinion, to the development of evolutionary theory by Charles Darwin?

By the middle of the XX century. a number of important generalizations and discoveries were made that contradicted creationist views and contributed to the strengthening and further development of the idea of evolution, which created the scientific prerequisites for the evolutionary theory of Charles Darwin. This is the development of taxonomy, Lamarck’s theory, Baer’s discovery of the law of embryonic similarity and the achievement of other scientists, the development of biogeography, ecology, comparative morphology, anatomy, the discovery of cell theory, as well as the development of selection and the national economy.