Complex sentence: A year after, he organized the Hispano-Filipino Bank and initiated and authored the Spanish-Castle in 1956, the year when he became merit-collaborator of the Doctor's Academy in Madrid.
Split into simpler sentences: A year after, he organized the Hispano-Filipino Bank and initiated and authored the Spanish-Castle in 1956. It was also in 1956 when he became merit-collaborator of the Doctor's Academy in Madrid.