Was the Thirty Years War the first really devastating war in Europe that affected...

[.^.]

...common population? how many people are thought to have died in the Thirty Years war and where mostly? which regions?

and how compared to WWII in rough guestimation?

how were wars previous to this war? were they mostly just skirmishes between nobles over land and power? WHAT ALLOWED WARS LIKE THE THIRTY YEARS WAR TO TAKE PLACE? PRINTING? , GUNS? , MASS RELIGIOUS GROUPS? OTHER?

please explain how this evolved into "patriotism" and WWI and WWII?

how numbers of people killed compared in the major wars in Europe and how has left European males maybe outnumbered by females? and why?

thanks for your answers!