What characterized the historical period immediately following Hero's vending creation?
Answer
A significant period where the direct line of coin-operated technology appears dormant
Following Hero of Alexandria's ingenious invention utilizing gravity and displacement, the historical record indicates a vast technological gap, or 'long hiatus,' regarding direct continuations of coin-operated machinery. Although concepts might have existed elsewhere, available accounts suggest the direct technological lineage went dormant until the concept resurfaced centuries later during the early modern period, eventually manifesting commercially in the 19th century in Europe. This gap suggests that groundbreaking ideas do not always immediately inspire progression.

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