Answer:
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Step-by-step explanation:
Cities are a broad subject, and more information is required to effectively answer your question. However, depending upon location and region, there are many cities with known origins. If you are referring to early major cities within ancient civilizations, then that's a little different. However, historians sometimes have very little to work with, and are limited to secondary or even tertiary accounts and resources. Nonetheless, if there are any cities with no absolute origins, historians are able to limit the possible explanations to a minimum.