Why was Europe suddenly filled with a desire to explore the world in the 15th century? What were the reasons?

The era of great geographical discoveries began in the 15th century and continued until the 17th century. The idea of the above era is to open up new lands of trade routes.
The main reasons were the search for new sales markets and raw material bases to make a profit.
Europe needed resources and new trading partners.
For example, Portuguese and Spanish travelers were looking for other trade routes in India in order to obtain gold, silver, spices. The transition from the Middle Ages to the Modern Age also occurred due to geographical discoveries.