In Chapter 6 of Animal Farm what does Squealer say about the new policy of engaging in trade with the neighboring farms?

It was soon became clear that certain items like "paraffin oil, nails, string, dog biscuits, and iron for the horses' shoes" could not be produced on the farm itself. These items could only be procured by trading with other human beings,

"accodingly Napoleon announced that he had decided upon a new policy. From now onwards Animal Farm would engage in trade with the neighbouring farms: not, of course, for any commercial purpose, but simply in order to obtain certain materials which were urgently necessary."

But all the animals were reminded of the earlier resolutions: "Never to have any dealings with human beings, never to engage in trade, never to make use of money" and they were uneasy and some of them even protested. But Napoleon quickly silenced all protests and announced that they would not directly deal with human beings but only through an intermediary called Mr. Whymper.

Afterwards Squealer the propaganda secretary manages to convince the animals that the earlier resolutions were purely a figment of their imagination:

"He assured them that the resolution against engaging in trade and using money had never been passed, or even suggested. It was pure imagination, probably traceable in the beginning to lies circulated by Snowball."

To those who objected he cleverly fooled them by demanding whether these resolutions existed in print. Since there was no written record of these resolutions those who objected were convinced that no such resolution ever existed.