Maria Montessori was instrumental in creating educational programs for marginalized individuals in the 20th century. She developed the Montessori Method, emphasizing child-led learning and hands-on experiences, which was revolutionary in shaping modern early childhood education. Her approach aimed to empower children, fostering independence and creativity, particularly among disadvantaged groups. Montessori's work laid the groundwork for inclusive educational practices and influenced educators globally, advocating for the rights of children to receive quality education regardless of their socioeconomic background, ultimately transforming pedagogical methods.