Who initially proposed the idea of building a windmill for the animals?

The idea of building a windmill is initially proposed by Snowball, one of the prominent pigs on the farm. He envisions the windmill as a way to improve the productivity of the farm by generating electricity, which would make the animals' lives easier and lessen their workload over time. Snowball passionately advocates for this project, believing it embodies the spirit of innovation and collective effort among the animals. His enthusiasm for the windmill represents a significant ideological aspect of the rebellion, emphasizing progress and a better future for all the animals.

The other characters do not propose the windmill; for instance, Napoleon later seizes control of the windmill initiative, but he does not originate the idea. Squealer primarily acts as a propagandist and relays information but does not generate proposals. Boxer, known for his strong work ethic, supports the windmill once the idea is introduced, but he has no role in proposing it. This context highlights the significance of Snowball's vision for the collective future of Animal Farm, illustrating his leadership role and ideological conflict with Napoleon.