The factor that caused various cities to conduct strikes in 1919 was demobilization. The correct option among all the options that are given in the question is the last option or the fourth option. Demobilization is actually the standing down of the armed forces from combat ready status. I hope the answer helps you.
The Germans defeated Russia during the World War I. The reason for its loss was that the Czar of Russia embarked on war that the country was not prepared for. He took control of the army and his strategies were a failure which left him with all the humiliating defeat and blame of its people.
The classical period spanned from 600 B.C.E to 600 C.E.
I'm not sure, but one may be using a sickle to cut plants/grass.
