The Ethnologue is an encyclopedic reference work cataloging all of the world’s 7,105 known living languages
Taking an educated guess here -- I think it would be 1, 3, and 4 which all seem pretty reasonable.
Answer:
Kings/Queens, nobles, knights, peasants
Answer: The Unemployed Councils of the USA was a mass organization of the Communist Party, USA established in 1930 in an effort to organize and mobilize unemployed workers to advance party policy goals in preparation for an anticipated final conflict to overthrow capitalism.
Explanation: Hope this helps! :)