1805 Treaty of Potsdam
... that the 1805 Treaty of Potsdam committed Prussia to joining the War of the Third Coalition, but was effectively ended by the Battle of Austerlitz less than a month later?
... that the <b id="mwA0o"><a href="./Treaty_of_Potsdam_(1805)" id="mwA0s" rel="mw:WikiLink" title="Treaty of Potsdam (1805)">1805 Treaty of Potsdam</a></b> committed Prussia to joining the <a href="./War_of_the_Third_Coalition" id="mwA0w" rel="mw:WikiLink" title="War of the Third Coalition">War of the Third Coalition</a>, but was effectively ended by the <a href="./Battle_of_Austerlitz" id="mwA00" rel="mw:WikiLink" title="Battle of Austerlitz">Battle of Austerlitz</a> less than a month later?