Final answer:
Powerful families like the Medici and the Sforza spread Renaissance ideas by providing financial support to artists and writers, enabling them to create influential works.
Step-by-step explanation:
Powerful families such as the Medici and the Sforza played a significant role in spreading Renaissance ideas by providing financial support to young artists and writers. They sponsored and patronized the creation of art and literature, enabling the artists and writers to focus on their craft and produce influential works. This support contributed to the flourishing of new ideas and the dissemination of Renaissance culture.
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