Last game, I annexed Maya. Westernized, then I thought I would release them. I did not check - it released a protectorate. It was just not planned. Worst: they westernized, and broke free! Refused diplo vassal. So I declared war on them, and had to do it twice, because too big to vassalize in 1 war (not sure why; before westernization, 1 war was enough...). Now, what would happen if I release them, and then westernize. Would they stay as vassals? Or become protectorate?