The first page of this book reads:

"A book giving the fundamental meanings of the 2100 words most commonly used in First, Second, Third, and Fourth year Latin, together with drill tables for quickly memorizing each year's vocabulary and sufficient exercises to give the student INDEPENDENT POWER to master syllabication, accent and correct pronunciation."

This looks like some interesting information, select a country to view and see the data.  

https://www.cia.gov/library/publications/the-world-factbook/geos/xx.html

The fight-or-flight response (also called the fight, flight, freeze, or fawn response in post-traumatic stress disorder, hyperarousal, or the acute stress response) is a physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival.[1] It was first described by Walter Bradford Cannon.[a][2] His theory states that animals react to threats with a general discharge of the sympathetic nervous system, preparing the animal for fighting or fleeing.[3]…