Final answer:
The Roman and Greek civilizations were the two whose learning was rediscovered during the Renaissance, influencing European culture and intellectual life significantly.
Step-by-step explanation:
The two ancient civilizations whose learning was rediscovered during the Renaissance are a) Roman and Greek. During this period, Italian trade routes were instrumental in the transfer of culture and knowledge. The recovery of lost Greek texts, preserved by Arab scholars, along with the migration of Byzantine scholars to Italy sparked the revival of classical knowledge. This revival led to a great interest in the works of ancient philosophers, scientists, and architects, such as Plato, Aristotle, and Vitruvius, and influenced the course of the Italian Renaissance significantly, with Renaissance artists and thinkers being encouraged to reach the accomplishments of the ancient world.