Answer:
As nouns the difference between fundamental and overtone is that fundamental is a leading or primary principle, rule, law, or article, which serves as the groundwork of a system; essential part, as, the fundamentals of linear algebra while overtone is (physics|music) a tone whose frequency is an integer multiple of another; a harmonic.
As an adjective fundamental is pertaining to the foundation or basis; serving for the foundation hence: essential, as an element, principle, or law; important; original; elementary.
Explanation:
Answer and Explanation:
Although England had the most superior naval might and ruled over the waterways around the end of the 19th century, it was afraid of aerial invasion because, long before then, the French had successfully used hot air balloon technology to cross the English Channel; in addition, emerging and potential aerial technology made the British to expect aerial bombardment which they knew their Isles wouldn't be safe from, in the event of an attack.
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