According to the Wikipedia, more than 75% of the worlds most active volcanoes occur on the Ring of Fire.
About 81% - 90% of the words largest earthquakes also occur on the Ring of Fire.
Answer:
The Printing Press
Explanation:
In the 15th century, an invention called the printing press enabled people to share knowledge more quickly and widely. Civilization never looked back. Knowledge is power, as the saying goes, and the invention of the mechanical movable type printing press helped disseminate knowledge wider and faster than ever before.
I believe the percentage living in Western Russia (the European part) is 78%
