What are the pros and cons of European colonization?

There are pros and cons to both Europeans and Natives.

However, the pro's tend to lean more towards Europeans, and the Cons toward Natives. In fact, the only pro that Natives often receive in these instances are advanced technology and sometimes medicinal knowledge. (In many instances of European colonization, the natives are found to have medicinal knowledge that is equal or even greater than that of a Europeans). Usually, however, the land that the natives own is either stolen, or destroyed, and the natives also often receive massive casualties (as do the Europeans). However, for the Europeans, they gain resources, knowledge of land, stolen territory, and great trading.