First of all it was not Spartan war,because almost all Greek cities fought in it,either on Greek or Persian side.No one can tell you the number,especially civilians who died. But the military losses...
There was no Persian and Spartan war. Persia invaded the Greek mainland on two occasions.
The first time in 490 BCE, a punitive expedition against Athens and Eretria for supporting Miletus in revolt...
No.English people = people born in EnglandBritish people= people born anywhere within the United Kingdom (Northen Ireland, England, Wales and Scotland)