Final answer:
Benjamin Franklin published his Almanac, "Poor Richard's Almanack," under the pseudonym "Poor Richard" for twenty-five years, beginning in 1733.
Step-by-step explanation:
Benjamin Franklin published his Almanac under the pseudonym "Poor Richard", which was derived from the full title of the publication, Poor Richard's Almanack. This Almanac, circulating for twenty-five years since its inception in 1733, was renowned for its witty aphorisms and practical wisdom that contributed significantly to Franklin's legendary status as a statesman and philosopher. Franklin's diverse roles as an inventor, writer, printer, diplomat, scientist, humorist, and state man, paired with his lively writing, made the Almanac a well-received publication for its time.