It was a mistake not to amalgamate the Atlantic provinces... so much duplication of government and services for four provinces with the population of 2.3 million people... less than the population of greater Vancouver.
It would be unpalatable to do now, of course... the Consitution would need changing, for one. Also, people get emotionally invested in “their” homeland. Try telling someone from PEI that they’re the same as a Newfoundlander or Nova Scotian.