Answer:
A russian revolution
Explanation:
Russia didnt lose ww1 they took alot of losses and backed out to start their communist revolution
"The Great Schism of 1054" / "East to West Schism" was the final speration of the eastern and western churches. (Protestant vs. Catholic) People broke away from the Catholic church for the first time NOT afraid of consequence.
The cultural change that resulted from an eight hour workday was that leisure times was "invented" people suddenly had more time as they were able to work for only 8 hours, they could spend other time doing other things.