Scientific discoveries

What nationality had the person who invented the mechanical watch?
Chinese
American
German
British
French
Who was the first person who discovered the blood circulation?
Thomas Harvey
William Harvey
Andrew Curie
Who discovered the Gravity?
Isaac Newton
Thomas Harry
James Watt
The person who invented the Pasteurization (Louis Pasteur) was:
Belgian
French
Italian
Spanish
The very first modern electrical air conditioning unit was invented in:
New York
Canada
New Zealand
Paris
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