In 1939 in the USSR, the very first old-age pensions (i.e. social security benefits for retirees) were introduced for representatives of a single profession. What was that profession?
By the 1950s, everybody in the USSR had old-age pensions, except for a single group. That group only got the right to old-age pensions in 1964. What was the profession of the people in this group?
No Googling!

Leave a comment