Final answer:
Westward expansion in the United States was driven by the need to decrease crowded urban areas, the need for raw materials to expand industries, and the need for land to sell to foreign countries.
Step-by-step explanation:
Ospread Christianity is NOT a major reason for westward expansion in the United States. Westward expansion in the 19th century was mainly driven by the need to decrease crowded urban areas, the need for raw materials to expand industries, and the need for land to sell to foreign countries.
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