At its height, near its birth, the Holy Roman Empire covered modern France, Germany, Northern Italy, Switzerland, Austria, the Czech Republicm, Belgium, the Netherlands, Luxemburg, and parts of Denmark, Poland, (Lithuania?), Slovenia, and Slovakia, but by 1618, the year the Thirty Years War began, "the Empire was not theoretically a national Germany state, but an international state of which the vicissitudes of furtune had left only the German-speaking fragment."1
Yet, if it had just been vicissitudes, we might expect a nearly random, or simply geographically compact, HRE, but instead the grinding down of the lands of the Empire occured, in the background over hundreds of years, with a linguistic millstone.2
Now, no one should argue that the war itself was fundamentally a conflict between language groups, it was anything but. It began with the Defenestration of Prague3
and was often continued by the Catholic Emperor Ferdinand's insistence on the Edict of Restitution4
, and so could be considered a religious war. The war let loose the dynastic ambitions of more than a dozen rulers, some of whom sought self-aggrandizement through acting as Champions of their Faith, but who were generally playing a zero sum game5
. The fundamental tension within Germany was between the Hapsburg Emperors, the Imperial Party, and the Princes, eager to guard their power and privileges, representing the party of German Liberties. And outside Germany, events had meaning for the greatest European power, Hapsburg Spain, and her rival, Bourbon France, and the utility of land, like the Val Telline6
, for further wars. Nothing seems too simple for this war, with the Catholic Popes and Bourbons supporting the Protestants, and sometimes German Protestants supporting their Emperor to prevent foreign armies from getting involved. And there were the rivalries of allied Generals, some who sought not-so-much victory as fame.
In linguistic terms, the Germans were fighting each other, and the Imperial German party was at odds with the other Germanic countries, the Dutch and Swedish. The Romance speaking French and Spanish were at odds with each other, and allied with one or other German party.
Modern political theorists, for example Kissinger and Chomsky, ascribe to the end of the Thirty Years War, the Treaty of Westphalia of 1648, the beginning of the modern state system and an end to the religious wars of the previous century. Wedgwood was less sure of that, and wrote "The Peace of Westphalia was like most peace treaties, a rearrangement of the European map for the next war." Certainly the German cession of Imperial privileges in Alsace to France has emerged and re-emerged as a flashpoint of conflict.7
Yet, the Treaty also confirmed certain realities, which appear to have a linguistic backdrop. The United Provinces, now called the Netherlands, speaking Dutch, were officially severed from the Germans. The Swiss, predominantly German speaking, also were officially recognized. [[Jutland]],
For violation of Letter of Majesty, guaranteeing toleration... "In revenge the Estate at Prague passed laws forbidding any man to settle in the country or acquire rights of citizenship unless he could speak Czech."9
"For Wallenstein the centre of Europe was the Slavonic block at the sources of the Elbe and Oder; for Ferdinand it was the group of German-speaking states on the upper Danube; for the Kings of France and Spain it remained the Rhine, the Low Countries and the north Italian passes."10