Well heres the full paragraph:

Many studies show that the amount of warming occurring during the MWP varied by season and region. Some provide evidence of relatively warm temperatures (most pronounced during the summermonths) in several regions, including the North Atlantic, northern Europe, China, and parts of North America, as well as the Andes, Tasmania, and New Zealand. Other studies maintain that the temperature conditions of certain regions, such as the Mediterranean, South America, and other locations in the Southern Hemisphere, were essentially no different from those of the present day.

So if you read the text instead of sifting it says it was evident in the entire northern hemisphere, asia and new zealand. Thats quite a lot. Also another section.

The notion of a medieval warm period is highly controversial. Many paleoclimatologists claim that well-documented evidence for the phenomenon appears across the North Atlantic region, while others maintain that the phenomenon was global, occurring all over the world

So ya. Its debatable wether it was everywhere but it certainly wasnt only europe. Please read the full text.