The novel opens with old boar Major inspiring the farm animals with a vision of a world without human oppression, and the animals subsequently rising up to overthrow Farmer Jones, establishing Animal Farm and a set of founding principles.

Key elements of this founding moment:

• The pigs, being the most intelligent animals, naturally take on organizing and leadership roles, an early detail that becomes significant as the story develops
• The animals establish Seven Commandments, including the foundational principle "All animals are equal," meant to codify the equality the rebellion was fought for
• The initial success and genuine improvement in the animals' conditions establishes the hope the rest of the novel will systematically undermine

This founding chapter sets up both the idealism of the rebellion and the specific principles Orwell will show being gradually corrupted.