USA HISTORY

Detailed explanation-1: -Social Darwinism is a loose set of ideologies that emerged in the late 1800s in which Charles Darwin’s theory of evolution by natural selection was used to justify certain political, social, or economic views.

Detailed explanation-2: -The social Darwinists-notably Spencer and Walter Bagehot in England and William Graham Sumner in the United States-believed that the process of natural selection acting on variations in the population would result in the survival of the best competitors and in continuing improvement in the population.

Detailed explanation-3: -The theory of natural selection was explored by 19th-century naturalist Charles Darwin. Natural selection explains how genetic traits of a species may change over time. This may lead to speciation, the formation of a distinct new species.

Detailed explanation-4: -Evolution and the Conditions for Natural Selection. Philosophers and biologists have been concerned to state the conditions for evolution by natural selection, many because they take it that there is a single theory, evolutionary theory, that governs Darwin’s process.

Detailed explanation-5: -The mechanism that Darwin proposed for evolution is natural selection. Because resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.