Invention and use of bigger ship made the quest feasible.
The Era of European Exploration was also known as Age of Discovery.
The exploration by the Europeans was believed to start from the 1400s and continued through the 1600s.
Some of the reason why the Europeans started the exploration of world through the sea in their quest and search for new trading routes, wealth, knowledge, dominance etc.
The European also believed they are in need to spread their religion to other places of the world.
In conclusion, the technological improvements which really enable the European to perform their quest by High sea and Ocean was the invention of bigger ships that could hold cargo and sail across the ocean.
