Since there is no background information, I would assume they could be going on strike.
Answer:
Yes it was effective
Explanation:
Social Security provides a foundation of income on which workers can build to plan for their retirement. ... Eighty-five years after President Franklin Roosevelt signed the Social Security Act on August 14, 1935, Social Security remains one of the nation's most successful, effective, and popular programs
The scenario "Banning CFCs has resulted in the shrinking of a hole in the ozone above Antarctica." illustrates an example of how environmental policies have resulted in the reversal of environmental damage. I hope my answer has come to your help. God bless and have a nice day ahead!
Panama Canal is the waterway that joins the Caribbean with the Pacific