The Age of Exploration happened during the period of Mercantilism, which meant that during that moment the country that had more goods such as gold, silver, and precious stones would be more powerful. The fight and the race for more and more goods pushed European powers to go to other continents such as Asia and start commerce with countries like China and India. Many goods were introduced during that period.
The problem was that the distance was long and they wanted to find shortcuts to Asia, with this they accidentally found The Americas. The Americas became another new place of exploration, full of goods and new land, this was a new opportunity to explore and gain more money than before.