Complex sentence: He was preconized Titular Bishop of Caryste by Pope Leo XIII, 12 August 1881, was created Cardinal-Priest of Santi Bonifacio e Alessio, 11 February 1889, and became Prefect of the Congregation of Indulgences.
Split into simpler sentences: He was preconized Titular Bishop of Caryste by Pope Leo XIII, 12 August 1881, was created Cardinal-Priest of Sts. Boniface and Alexis, 11 February 1889, and became Prefect of the Congregation of Indulgences.