Which of the travels and expeditions led to the most important discoveries?

In my opinion, the following expeditions became the most important in the history of mankind:
1. Vasco da Gama’s expedition to India. Thanks to her, the Portuguese finally managed to bypass Africa and enter the Indian Ocean.
2. The voyage of Columbus, as a result of which people discovered a new continent for the first time in several millennia;
3. Fernand Magellan’s circumnavigation, after which the sphericity of the Earth no longer raised questions.
4. Swimming by James Cook, who saw Australia and many other islands in the Pacific Ocean.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.