A pro of imperialism is it that it can modernize other nations. A con of imperialism is that it has led to the murder of millions of people throughout history.
There are several different types of imperialism which include colonization, direct, indirect, sphere-of-influence and economic imperialism. Imperialism has often lead to countries self-modernizing themselves based on the country they have been conquered under. Imperialism can help to spread ideas, such as democracy, as well as encouraging self-determination within individual countries. The cons of imperialism have included the fact that nonsensical borders were established in former African colonies and Middle Eastern Mandates. This led to continual ethnic conflicts that still go on today. A loss of tradition can also be seen as a result of imperialism.