Complex sentence: Mogollón devoted his entire life to create new ways of improving the quality of education of the poorest children in the most impoverished rural communities, his ideas and educational models changed the lives of millions of children around the world.
Split into simpler sentences: Mogollón devoted his entire life to creating new ways of improving the quality of education of the poorest children in the most impoverished rural communities. His ideas and educational models changed the lives of millions of children around the world.