Semnanball is a provinceball of 
Iranball. also it has least density in Iranball
History
Semnanball born as a 
4ball, adopted by Medesball, 
Achaemenid Empireball, 
Parthiaball, 
Sassanidball, 
Rashidunball, Abbasidball, 
Umayyadball, 
Qajarball, 
Ilkhanateball, 
Pahlavi Iranball and Iranball.