Answer:
A
Explanation:
This events happened in WW2
In May 1985, Gorbachev gave a speech in Leningrad in which he admitted the slowing of economic development, and inadequate living standards. Gorbachev and his team of economic advisors then introduced more fundamental reforms, which became known as perestroika (restructuring).
The event that occurred in the soviet union that was a direct cause of the other three is :
- The implementation of five-years plan
This implementation of five-years plan became a direct cause for :
1. Famine in Ukraine
2. establishment of collective farm
3. development of heavy industry
hope this helps
Can you be more specific and add more context? This has happened plenty of times across human history.