How many letters does the top answer for “the imperial dynasty ruling china from about the 18th to the 12th centuries bc” have?

The most common answer is shang (5 letters).

Crossword clue: the imperial dynasty ruling china from about the 18th to the 12th centuries bc

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

shang 5 letters wn-def

the imperial dynasty ruling China from about the 18th to the 12th centuries BC