Answer:
Their technology and scientific methods were more advanced.
Step-by-step explanation:
In any conflict, the Europeans had the advantage because they had weapons and armor made with metal. Natives still had primitive weapons in comparison. The development of printing meant that knowledge was well spread and medical care was more advanced. This meant that they could lead a more organized, informed and healthy life. Europeans could also get more help from Europe. They could relay messages and send ships for reinforcements.