https://www.coe.int/t/dg4/linguistic/Source/Framework_EN.pdf This restructured version of the Common European Framework of reference for language learning, teaching and assessment represents the latest stage in a process which has been actively pursued since 1971 and owes much to the collaboration of many members of the teaching profession across Europe and beyond. Advertisements
http://content.industrydive.com/rosettestone_playbook_global_language_learning/ A survey conducted by IDG Research Services for Rosetta Stone shows that 90 percent of business leaders say their departments face language challenges, but only 1 in 3 are actively engaging their HR resources to solve those challenges.
https://imgur.com/r/MapPorn/aZdPxKd There are at least 7102 known languages alive in the world today. 23 of these languages are a mother tongue for more than 50 million people.