Easy and difficult languages

linguistic consortium in Paris has come up with following results: 

Criteria for Evaluation - linguists examined complexity of 

1. grammar, 
2. syntax, 
3. historical development, 
4. pronunciation, 
5. orthography, 
6. letter styles, 
7. signs, etc 

Easiest languages to learn: 

10. mongolese

09. aramaic

08. greek

07. norwegian

06. italian

05. romanian

04. croatian

03. bulgarian

02. english

01. the easiest language in the world spoken by more than 500 million people is spanish

https://www.youtube.com/results?search_query=Easy+Language

https://www.youtube.com/results?search_query=Medium+Language
Most Difficult languages to learn: 

10. german

09. french

08. chinese

07. japanese

06. korean

05. persian

04. arabic

03. finnish

02. hungarian

01. the most difficult language is Slovak

https://www.youtube.com/results?search_query=Hard+Language