The document discusses developments in art and culture in 15th century Florence, known as the Quattrocento period. It describes the expansion of humanism and emphasis on education, as well as major artistic developments like linear perspective pioneered by Brunelleschi. A key event was a competition for the Baptistery doors, won by Ghiberti, which showcased the confrontation between Gothic and classical styles. Donatello's sculptures like the David were among the first freestanding nudes since antiquity. Painters like Masaccio and Uccello mastered techniques like linear perspective and foreshortening in their frescoes.