1967 was a significant milestone for the Soviet Union : the 50th anniversary of the Great October Revolution ( as it ’ s still known in Russia and ex-USSR countries ) which changed the course of history on the entire planet .
1967 год был знаковым для Советского Союза : 50-летний юбилей Великой Октябрьской революции , которая изменила ход истории на всей планете .