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Ivan
3 years ago
10

What was one of the challenges doctor Salk faced in his attempt to create a polio vaccine ?

English
1 answer:
Oliga [24]3 years ago
4 0
To do surgery well I think
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The correct option is<em> Mozart: music</em>.

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How was Charlemagne (the ruler) significant in history and how has he impact society today?
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<span>Each Monday, this column turns a page in history to explore the </span><span>discoveries, events and people that continue to affect the history being made today.

</span> Europe was mired in a centuries-long dark age before a king named Charlemagne came along and turned on the light switch.

By encouraging arts, culture and education, the 8th-century Frankish king – who would eventually become the first Holy Roman Emperor – tugged the continent out of cultural stagnation that threatened to never end.

Both a fierce warrior and in many ways the first Renaissance man, Charlemagne's achievements on the battlefield and in his laws led to the first notion of a pan-European identity.

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The speaker in In Memoriam, A. H. H. by Alfred, Lord Tennyson, believes in
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