Answer:
More Americans opposed Germany due to their use of unrestricted submarine warfare.
The Lusitania was a British ship that was sunk by German troops. Among 1200 passengers who died in the attack, 128 were Americans.This angered the Americans, who condemned the attack on an unarmed passenger ship without prior warning.
Explanation:
Jonas Salk<span> </span><span>was an American </span>medical researcher<span> and </span>virologist<span>. He discovered and developed one of the first successful </span>polio vaccines in the 1950's.
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