Displacement: The forced movement of people from their locality or environment and occupational activities. Like being kicked out of your favorite study spot in the library because someone else decided they wanted it.
Colonialism: As mentioned earlier, this is when one country takes control over another area and its resources - including land.
Land Reform: The process of changing laws, regulations or customs regarding land ownership. It's like rewriting the rules for a board game so that everyone has an equal chance at winning.