Do you think the consequences of imperialism/colonialism are more positive or negative?

It depends on what you have been taught, but I would personally say negative because of the diseases that destroyed Native Americans and the rise of slavery.

On the flip side, if you're thinking of positive, it did help exchange new ideas and goods (the Columbian Exchange) between the worlds. It also allowed a safe haven for those persecuted (like the Protestants) and allowed countries to dump their inmates onto the new land.

the policy of appeasement influenced the beginning of ww2 because hitler gave the other countrys chocies but after they choose to try and appease hitler to not invade their country but he still invaded them.