I would say it was much more than one event. It was several things. Most notable among these was the discovery of a large land mass across the Atlantic and then the round-the-world sailing of Magellan.
Mostly, Asia had what they didn't....silk, spices and such.
they wanted to get the silks and spices there
It was all about spices, yes the ones for cooking
Europeans sought economic gain from natural resources in Africa and consumer markets in Asia.
Europeans were most intrested in spices from Asia.
In 1492 Christopher Columbus sailed West across the Atlantic Ocean in hopes of reaching Asia. To navigate, he replied in part on a map of the world that Ptolemy had created. Columbus never reached Asia. He ran into North America instead, a land mass Ptolemy knew nothing about. Europeans were stunned that observation of the real work has disapproved the teachings on an ancient theory.
In 1492 Christopher Columbus sailed West across the Atlantic Ocean in hopes of reaching Asia. To navigate, he replied in part on a map of the world that Ptolemy had created. Columbus never reached Asia. He ran into North America instead, a land mass Ptolemy knew nothing about. Europeans were stunned that observation of the real work has disapproved the teachings on an ancient theory.
with their eyes
The Renaissance.
in the "scramble" for Asia, Europeans had to deal with Japan.
Usually it was because the main trade hub was in Asia and Europeans couldn't get there because of the naturally border dividing mountain range. Thus, people that wanted to trade with Asia needed to sail. this then caused people to believe sailing was more productive than walking.
they had no maps that show the world correctly, no navigation tools ad they had never traveled to Asia by sea.