The Conversion From Private Fiefdom And Dynamic Borders+pope To State Government With Fixed Borders – Ending The Wars Of Religio

https://en.wikipedia.org/wiki/Peace_of_Westphalia

STATE SOVEREIGNTY
https://en.wikipedia.org/wiki/Westphalian_sovereignty

ECONOMICS OF THE TREATY
http://www.schillerinstitute.org/strategic/treaty_of_westphalia.html