Answer:
George III. Though 'inevitable' is stretching it a bit. Most of the problem was with slow communications - the Stamp Act was repealed very quickly, but no-one in America knew that for six months; and the colonists were not exactly reasonable about taxation; the average Englishman was paying 29 shillings a year in taxes, and the average American was paying sixpence - one fifty-eighth as much. George III was stubborn, sure, but nowhere near in the same league as Charles I or Louis XVI; and the poor guy was sick, too.