One night, all the animals at Mr. Jones' Manor Farm assemble in a barn to hear old Major, a pig, describe a dream he had about a world where all animals live free from the tyranny of their human masters
I would say that it was the sentence that said"
''He lay on his back and began to pass his life in review in quite a new way.'" that shows that he is contemplating his life, plzzzzz mark as brainliest :)