Answer: Nationalism can lead to political conflict that if someone from a different country has pride in their country but someone doesn't like that country that the other person has, this can cause political conflict and wars.
Explanation: For example, in a historic time person A likes and has pride in country A. Person B disagrees and likes and has pride in country B. If person A and B doesn't agree with either country A or B, it can result in political conflict and cause war. Either person A wins or person B wins.