Complex sentence: He conducted scientific studies and experiments in his own palace and private botanical garden, as well as the first trials for the acclimatization and culture of the tea-plant in Brazil, and was the founder of a school of fine arts.
Split into simpler sentences: He conducted scientific studies and experiments in his own palace and private botanical garden, as well as the first trials for the acclimatization and culture of the tea-plant in Brazil. Later in life, he was the founder of a school of fine arts.