Pearson did very little in comparison. King oversaw the greatest expansion of our economy and our rise in the "world" as a relevant nation in the thirties and forties. Pearson was only PM for six years - I think.. That was during the Liberal Party's "overspending" sixties. You speak of troubles in Quebec for King. Well, Pearson's government was in power as the surge of nationalism and terrorism in Quebec came to be. Did he handle things right at the time? I dunno.