Answer:
Nationalism is a negative idea. Nationalism lead to World War 1, World War 2 and imperialism. These events which resulted because of nationalism lead to millions of human deaths and destruction.
Well, there are a few reasons, but I will give you an advantage, where you can find the disadvantage from it.
Europe has a small coastline, but with it, there's a sea that leads straight to north America. That means there's easy transport of goods.
Answer:
A) Slaves who ran away & set up free communities
