Changes During The Renaissance?

Question

What were the three most important significant changes that took place during the renaissance? Why are they important/Who was involved with them?

Answer 1

Advances in art ( e.g. perspective, different media; Leonardo, Michelangelo ); architecture ( Brunelleschi, ); advances in mathematics and finance( e.g.double-entry bookkeeping system, popularized by Luca Pacioli ); political science ( discussions by Machiavelli); banking; rediscovery of the philosophy of Aristotle; music advanced beyond the plainchant of the middle ages to richer madrigals and polyphony.