Pitt endeavored to form a cabinet, but was obliged, with chagrin, to confess his inability. At last the Duke of Cumberland succeeded in forming the so-called Rockingham Cabinet, a weak combination, but far less unfavorable than its predecessor towards America. The Marquis of Rockingham, as prime minister, had Edmund Burke as his private secretary; while General Conway, one of the very few who had opposed the Stamp Act, now actually received the southern department of state within which the colonies were included. Still there seemed little hope for any undoing of the past, which probably would never have been wrung from this or any British ministry so long as all the discontent was on the other side of three thousand miles of ocean. But this was ceasing to be the case. The American weapon of non-importation was proving most efficient. In the provinces the custom of wearing mourning was abandoned; no one killed or ate lamb, to the end that by the increase of sheep the supply of wool might be greater; homespun was now the only wear; no man would be seen clad in English cloth. In a word, throughout America there was established what would now be called a thorough and comprehensive "boycott" against all articles of English manufacture. So very soon the manufacturers of the mother country began to find themselves the only real victims of the Stamp Act. In America it was inflicting no harm, but rather was encouraging economy, enterprise, and domestic industry; while the sudden closing of so enormous a market brought loss and bankruptcy to many an English manufacturer and warehouseman. Shipping, too, was indirectly affected. An outcry for the change of a disastrous policy swelled rapidly in the manufacturing and trading towns; and erelong the battle of the colonists was being fought by allies upon English soil, who were stimulated by the potent impulse of self-preservation. These men cared nothing for the principle at stake, nothing for the colonists personally; but they cared for the business by which they sustained their own homes, and they were resolved that the destroying Stamp Act should be got out of their way. Such an influence was soon felt. Death also came in aid of the Americans, removing in good time the Duke of Cumberland, the merciless conqueror of Culloden, who now was all ready to fight it out with the colonies, and only thus lost the chance to do so.