Why is it necessary to begin trading with other farms, and how do the animals react to this new policy?

In
,gathers the animals and explains that he will implement a new policy by beginning to trade with
humans from neighboring farms. Napoleon assures the animals that he is only trading with humans
for commercial purposes since there are many tools and materials needed to construct the
windmill that the animals cannot procure on the farm. After listening to Napoleon's new policy,
four pigs begin to protest but are abruptly silenced by a tremendous growling from the dogs.
Napoleon also announces that they will conduct business using an intermediary named Mr. Whymper.
Following the meeting, the animals feel uneasy about engaging in trade with humans and vaguely
remember there being a tenet of Animalism that prohibited trade and contact with humans.
However,eases their minds by assuring them that a resolution against engaging in trade and using
money had never been passed or even suggested.