I would have to say A) Lewis and Clarke expedition because Lewis and Clarke did explore the Louisiana Territory, The Treaty of Greenville happened before the purchase, and the other 2 had different causes.
The presidential election of 1928 pitted Al Smith of New York against Herbert Hoover of California. Herbert Hoover won the election soundly carrying an overwhelming majority of the popular votes and also the electoral college.
Answer:
The most prized goods for trade included terracotta pots and flint tools.
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.
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