Because of the simple fact that they were the closest places to Europe.
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Answer:
Right choice:
The belief that America was destined by God to expand west to the Pacific.
Explanation:
The Manifest Destiny saw as a natural mission of the United States to expand westward. For its believers, the geography and the history of the country was a signal from God that it was His will. The Manifest Destiny was a drive of expansion in the 19th century. The goal to reach the shores of the Pacific was achieved in 1848 with the victory in the Mexican-American War.
Their hygiene was poor and there was no cure for it. They also almost never bathed. The plaque caused many deaths.