Final answer:
Josephine St. Pierre Ruffin was 54 years old when she published her first newspaper, the Women's Era, marking a significant moment in journalistic history and media representation for African-American women.
Step-by-step explanation:
Josephine St. Pierre Ruffin began her role as a pioneer in African-American journalism when she was 54 years old. This was an important event in journalistic history, as it represented an era when Black-owned newspapers were forming their own voices due to the exclusion from White-owned media outlets. After her husband's death, Josephine founded the Women's Era newspaper in 1890 as the first newspaper published by and for African-American women, navigating through cultural and gender barriers to create an influential platform for issues such as women's rights and racial justice.