Answer:
:Space Race
The Space Race, the competition between the U.S. and USSR for supremacy in space flight capability, had its origins in the missile-based nuclear arms race between the two nations following World War II.
<span>Theodore Roosevelt
</span>
<span>Theodore Roosevelt and Woodrow Wilson
each expanded the powers of the presidency. Roosevelt worked closely
with Congress, sending it messages defining his legislative powers. He
also took the lead in developing the international power of the United
States.</span>
Answer: the Pullman Palace Car Company, a manufacturer of railroad cars, cut the already low wages of its workers by about 25 percent.
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>
Nicolaus Copernicus rediscovered the heliocentric solar system