<span>To become Canadian, you must swear the Oath of Allegiance to the Queen of Canada. The oath is vital in the naturalization process. No oath means not becoming a citizen. Other countries have similar laws.</span>
Antonie Philips van Leeuwenhoek FRS was a Dutch businessman and scientist in the Golden Age of Dutch science and technology. A largely self-taught man in science, he is commonly known as "the Father of Microbiology", and one of the first microscopists and microbiologists.
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