Answer: The most important characteristic for the development of a civilization is the presence of advanced cities because they were centers of trade, which established economies and allowed for further development of the civilizations.
Explanation:
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Answer:
The answer is Coarse wavelength division multiplexing (CWDM)
Explanation:
CWDM is the wavelength designed for short- distance connections and has only a few lambdas. It is mostly used nowadays as a type of wavelength technologies deployed in cities and inner access ways. It is inexpensive and thus a cost effective wavelength division multiplexing. Cost effective lasers can be used in CWDM due to the spacing of about 20nm between its wavelengths.
