id author title date pages extension mime words sentences flesch summary cache txt en-wikipedia-org-3264 Kingdom of Prussia - Wikipedia .html text/html 9506 920 64 In it, the First French Republic and Prussia had stipulated that the latter would ensure the Holy Roman Empire's neutrality in all the latter's territories north of the demarcation line of the river Main, including the British continental dominions of the Electorate of Hanover and the Duchies of Bremen-Verden. Most of the kingdom, aside from the Provinces of East Prussia, West Prussia, and Posen, became part of the new German Confederation, a confederacy of 39 sovereign states (including Austria and Bohemia) replacing the defunct Holy Roman Empire. The divided administration of Schleswig and Holstein then became the trigger for the Austro-Prussian War of 1866—also known as the Seven Weeks' War. Prussia, allied with the Kingdom of Italy and various northern German states, declared war on the Austrian Empire. ^ Prussia allies in the Austro-Prussian War were: Anhalt, Bremen, Brunswick, Lauenburg, Lippe-Detmold, Lübeck, Hamburg, Mecklenburg-Schwerin, Grand Duchy of Mecklenburg-Strelitz, Oldenburg, Saxe-Altenburg, Saxe-Coburg and Gotha, Schwarzburg-Sondershausen, Waldeck-Pyrmont. ./cache/en-wikipedia-org-3264.html ./txt/en-wikipedia-org-3264.txt