Kolhoz / kolkhoz
In english, they were called collective farms.
sex
It's not just farms - the concept is known as a Cooperative, or Co-Op.
There is no standard collective noun for a group of unions. The noun 'union' can function as a collective noun for a group of people or things, for example, the International Union of Operating Engineers or the Union of Soviet Socialist Republics (USSR).
A group of wind machines is called a wind farm. Wind farms consist of multiple wind turbines that work together to generate electricity from the wind.
The AFL-CIO is a federation of different unions in the US. Member unions include factory worker unions and government employee unions.
Group of Soviet Forces in Germany ended in 1988.
Group of Soviet Forces in Germany was created in 1949.
Unions do.
The Soviet Union
It seems that in 1919, the Mensheviks were still a vocal group in the Soviet Union. A review of events of the Second Congress of Trade Unions, shows that they introduced several resolutions one of which was a protest against their perception that the Soviet government was repressing workers' independence.
Group of people controlled by the Soviet Union
A group of fruit trees is an orchard or a grove.