- Economic: The search for new trade routes and resources, such as gold, silver, and spices.
- Political: The desire to expand territory and power, and to gain control of strategic locations.
- Religious: The spread of Christianity and other religions.
- Scientific: The desire to learn more about the world and its geography, and to make new discoveries.
- Cultural: The desire to experience different cultures and ways of life.
- Adventure: The thrill of exploring new places and facing unknown dangers.