During the <a href="https://en.wikipedia.org/wiki/Seven_Years'_War" id="mwTQ" rel="mw:WikiLink" title="Seven Years' War">Seven Years' War</a> the leading burghers of <a href="https://en.wikipedia.org/wiki/Königsberg" id="mwTg" rel="mw:WikiLink" title="Königsberg">Königsberg</a> submit to <a href="https://en.wikipedia.org/wiki/Elizabeth_of_Russia" id="mwTw" rel="mw:WikiLink" title="Elizabeth of Russia">Elizabeth of Russia</a>, thus forming <a href="https://en.wikipedia.org/wiki/Russian_Prussia" id="mwUA" rel="mw:WikiLink" title="Russian Prussia">Russian Prussia</a> (until 1763).