It was so one branch of government couldn’t overpower the other 2
Popular sovereignty is where the government is created and run by the will of the people.
So your answer would be people.
The Quartering Act of 1765 required the colonies to house British soldiers in barracks provided by the colonies. If the barracks were too small to house all the soldiers, then localities were to accommodate the soldiers in local inns, livery stables, ale houses, victualing houses, and the houses of sellers of wine. Should there still be soldiers without accommodation after all such public houses were filled, the colonies were then required to take, hire and make fit for the reception of his Majesty’s forces, such and so many uninhabited houses, outhouses, barns, or other buildings as shall be necessary.
I guess people getting into disagreements and bullying and stuff.