Read the dictionary definition of upheaval. All definitions for this word.
1. disturbance usually in protest
2. (geology) a rise of land to a higher elevation (as in the process of mountain building)
3. a violent disturbance
1. the convulsions of the stock market
4. a state of violent disturbance and disorder (as in politics or social conditions generally)
1. the industrial revolution was a period of great turbulence