Animal Farm

How successful were Snowball’s committees and the animals’ abilities to learn to read?

They were in part successful.

Explanation:

Snowball, based on Leon Trotsky, is intelligent, passionate and eloquent.

He seems to win the loyalty of the other animals, bringing literacy to the farm, so that they can better grasp the principles of Animalism (the communism of Leon Trotsky) of which Snowball was the author.

So yes, he was successfull in improving the animals´ abilities to learn to read. But it didn´t help him to become the undisputed leader.

Because he is chased of the farm by Napolean, who wants to get rid of a rival. Just as Stalin got rid of many rivals...

faithful servants eumaeus and philaetius:

his ragged vest then drawn aside disclosed the sign conspicuous, and the scar exposed: eager they view'd, with joy they stood amazed with tearful eyes o'er all their master gazed:

these servants know ulysses by the scar he got when he was a child - so when he showed them the mark, they immediately knew this is truly their master and they hugged him, finally starting to believe his words.

the whisper is the answer, hope this : )