Answer: It depends on your perspective, but generally negative.
Step-by-step explanation:
While Europeans brought modern technology to different countries they explored, they ALWAYS brought a path of destruction. They 'claimed' land that was not theirs, gave people diseases, started wars, and treated the native people terribly. Their exploring did positively affect the mapping of the world, they found that the world is not flat, and made more accurate maps. Exploring was a good thing for the Europeans because they gained land for their empire and resources. But for anyone living in a place they explored, the impact was negative. The natives most of the time were pushed around and exploited by the Europeans. So in my opinion European Exploration had a negative impact.