It's the language barrier since Persians and kurdish people speak different languages Islam changed shia and sunni....
Weather describes the condition of the atmosphere over a short period of time e.g. from day to day or week to week, while climate describes average conditions over a longer period of time. The climate of an area or country is known through the average weather over a long period of time.
The crusades sent to spread Christianity
I think it’s false please tell me if I’m wrong