why are the animals uneasy about napoleon's decision to trade with humans? how does squealer convince the animals that such trade is acceptable?

Shortages begin to occur. The animals require things, such as iron for horseshoes and machinery for the windmill, that they cannot produce on the farm. To provide a solution, Napoleon opens trade with the neighboring farms and says that the animals may need to sell some of the hens’ eggs in the nearby town of Willingdon. The other animals are “conscious of a vague uneasiness” because the Seven Commandments forbid trade with humans and the use of money. Squealer assures the animals that trade and the use of money are allowed after all—that no resolution against those activities has ever been passed. He convinces them that their memory of such a resolution is mistaken.