How did Placido Maria Schiaffino become a cardinal in 1885?
Reference
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OpenAI's Answer
Placido Maria Schiaffino was made a cardinal by Pope Leo XIII on July 27, 1885, during a consistory held in the Vatican. Before becoming a cardinal, Schiaffino was heavily involved in the Benedictine order and held significant positions within the Roman Curia. He received the title of cardinal deacon and the deaconry of Ss. Vito, Modesto e Crescenzia.
For more detailed information, you can refer to the Wikipedia page about Placido Maria Schiaffino here.