When A.I. Spain , France and Britain are given their colonies in America the first few turns they get them completely deviod of troops which in the current build saddles them with a sudden requirement to spend more than they can afford {in those early turns , the new provinces won't make enough to cover the recruitment costs properly the way the A.I. spends} . It over stretches those factions under A.I. {Alleged Intelligence} control .
It is exacerbated when they are at war {a human player can simply prepare beforehand and blitz them and the Native American factions can swamp them with their zerg rush} .

A better solution would be to let them keep atleast half those protectorates' troops {and have them use their parent factions troops only unless they rebel so they can be replenished} when they become the Main factions' possession and move the "AutoHandOver" date to mid-game {even give them all troops and scrap the auto feature completely . None of them achieved in history what the game asks anyway} .