The late-19th-century source describes Social Darwinists viewing nations as competing organisms, where war and conquest naturally favor the strong. This perspective contributed to the growth of militarism and imperial expansion in Europe, justifying aggression as evolutionary necessity. Choice A correctly identifies this dangerous political development leading into the 20th century. Choice B refers to early 1800s Romanticism, predating Social Darwinism. Choice C points to mid-1700s Enlightenment culture, unrelated chronologically. Choice D is incorrect, as mass politics and nationalism rose, not declined. Choice E misstates the trend, as nationalism strengthened with ideas of collective fitness.

The secondary-source excerpt describes how 'survival of the fittest' was adapted from natural selection to argue that poverty indicates inferiority and empires demonstrate fitness, reflecting Social Darwinism's influence on politics. This led to policies favoring minimal government intervention, such as laissez-faire economics and reduced aid to the poor, as assistance was seen as weakening society by preserving the 'unfit.' Choice A correctly identifies this consequence, linking it to opposition against welfare on evolutionary grounds. Choice B is incorrect because Social Darwinism often justified empires, not their abolition. Choice C is wrong as it promoted, rather than turned away from, racial classifications. Choice D misstates the timeline, as Mendelian genetics did not immediately replace natural selection in discourse. Choice E is inaccurate, as nationalism increased with ideas of racial or national fitness.

The secondary-source excerpt discusses how evolutionary ideas were turned into policies for managing reproduction to 'improve' populations, often targeting the marginalized, which directly indicates the eugenics movement. Eugenics advocated selective breeding or controls based on Social Darwinist principles of enhancing human 'fitness.' Choice B is the most fitting movement from turn-of-the-century Europe. Choice A refers to Futurism, an artistic movement not focused on reproduction. Choice C points to 1700s abolitionism, unrelated to evolutionary policy. Choice D describes mercantilism, an economic system from earlier centuries. Choice E outlines physiocracy, another pre-Darwin economic theory.

Darwinism introduced the idea that species are not fixed but change over time, challenging traditional views and encouraging historical perspectives on nature. Social Darwinism built on this by applying evolutionary ideas to human society, often to naturalize class inequalities as inevitable results of competition rather than products of policy. This rhetoric helped elites defend the status quo, presenting wealth disparities as 'natural' rather than politically constructed. It aligned with laissez-faire capitalism, where minimal government intervention allowed 'natural' market forces to prevail. Choice B exemplifies this by describing policies that limited social assistance and viewed poverty as a competitive outcome. This connection shows how intellectual shifts influenced economic and social policies in industrial Europe.

While Darwin's theory was purely biological and did not advocate for political actions, imperialists in the late 19th century borrowed its vocabulary to frame colonization as a natural process. They argued that 'fitter' nations or races were destined to dominate weaker ones, portraying empire as an evolutionary imperative. This logic made imperialism seem morally justified, as if it advanced human progress through competition. It often ignored the ethical and cultural complexities of conquest. Choice B captures this by stating that colonial rule demonstrates biological superiority and destined dominance. Recognizing this helps explain how scientific ideas were misused to support European expansion in Africa and Asia.

After Darwin published 'On the Origin of Species' in 1859, his ideas sparked widespread debate in Europe, influencing not just science but also social thought. Writers like Herbert Spencer popularized terms like 'survival of the fittest,' shifting from Darwin's descriptive biology to prescriptive social policies. This shift led to arguments that societal interventions, such as welfare or union protections, interfered with natural progress by aiding the 'unfit.' Consequently, it influenced opposition to social reforms, portraying poverty and inequality as natural outcomes. Choice B reflects this by noting the rise of anti-welfare and anti-union sentiments grounded in evolutionary rhetoric. This illustrates how scientific concepts were repurposed to support laissez-faire economics and resist labor movements in the late 19th century.

In late 19th-century Europe, debates over social policies like poor relief were influenced by Social Darwinist ideas, which warned that aiding the poor would allow 'unfit' individuals to thrive, weakening society overall. This contrasted with Darwin's original theory, which described adaptation in nature without implications for human welfare systems. Social Darwinists applied 'survival of the fittest' to argue against interventions, promoting struggle as essential for progress. Such views opposed emerging welfare states and supported individualism. Choice A exemplifies this by describing opposition to poor laws and assistance on evolutionary grounds. This illustrates how biological concepts were adapted to resist social reforms during industrialization.

Social Darwinists would most likely oppose the creation or expansion of state-backed social insurance for workers. Since they believed that social hierarchies resulted from natural selection and that government intervention interfered with the 'survival of the fittest,' they opposed policies designed to protect workers from economic hardship. Social insurance programs like unemployment benefits, accident compensation, or old-age pensions were seen as artificial supports that prevented the natural sorting of society. These programs, which emerged in various European countries in the late 19th century (notably Bismarck's social insurance in Germany), directly contradicted Social Darwinist ideology. Options C, D, and E actually align with Social Darwinist preferences for competition and minimal government intervention.

The excerpt describes two different responses to Social Darwinist arguments about "fitness" in society. Some reformers promoted positive measures like public health and education to strengthen the nation's population, while others advocated coercive measures to prevent those labeled "unfit" from reproducing. This latter approach is called eugenics, a movement that sought to "improve" human populations through controlled breeding. Eugenicists argued that certain traits (often conflated with poverty, disability, or race) were hereditary and undesirable, advocating for forced sterilization, marriage restrictions, and immigration controls. This movement gained significant support in Europe and America in the early twentieth century, leading to horrific policies including forced sterilizations and ultimately contributing to Nazi racial ideology. Answer B correctly identifies eugenics as the term for these coercive measures aimed at preventing reproduction of those deemed "unfit."

The Enlightenment emphasis on reason and natural laws most directly set the stage for the nineteenth-century confidence in using science to explain society. The Enlightenment promoted the idea that natural laws governed not just the physical world but also human behavior and society. This created an intellectual framework where scientific methods and concepts could be applied to understand social phenomena. When Darwin's ideas emerged in the nineteenth century, they fit into this existing pattern of seeking natural, scientific explanations for all aspects of life. The Enlightenment's confidence in reason and natural laws made it seem logical to many that evolutionary concepts could explain social hierarchies and economic success. This intellectual heritage made Social Darwinism's claims about biological superiority determining economic success appear plausible to many Europeans who were already primed to seek scientific explanations for social outcomes.