Answer and explanation;
Most medieval art is religious for decorating churches. Most Renaissance art was commissioned by nobles and rich families.
Style: Medieval art was mostly flat and dark of human religious figures. Renaissance style is Realism with an emphasis an nature, beauty, shadow and light.
Medieval paintings were flat, with little sense of depth. The Renaissance saw the teaching of realistic perspective, shading, lighting, and proportions.
A. Social Darwinism
A quote I found sums this question up, but it'd be better to do some side research.
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"<span>the theory that individuals, groups, and peoples are subject to the same Darwinian laws of natural selection as plants and animals. Now largely discredited, social Darwinism was advocated by Herbert Spencer and others in the late 19th and early 20th centuries and was used to justify political conservatism, imperialism, and racism and to discourage intervention and reform."</span>
Peers, advice, physical exercise, assistive technology
