Okay kiddo, let's talk about a really big word - postcolonialism in international relations. This means understanding how the consequences of colonization or when one country takes over another country, still affect the way these countries interact with each other today.
Postcolonialism looks at how the past has impacted the present. For example, let's pretend you took someone's toy without asking them. Even if you say sorry or give the toy back, the person might still feel upset or hurt by what you did. This is kind of like how some countries might still feel angry or hurt by how they were treated during colonization.
Postcolonialism also looks at how power is still unevenly distributed in the world today, and how that affects the relationships between countries. This means some countries have more influence or control over others, and this can cause conflicts or tensions.
So, postcolonialism is like taking a step back and looking at how the past impacts the present, and how we can better understand the relationships between countries today.