Empire of Thessalonica
... that the bid of the Empire of Thessalonica to recover Constantinople and re-establish the Byzantine Empire failed when it was defeated by the Bulgarians at the Battle of Klokotnitsa?
... that the bid of the <b id="mwuw"><a href="./Empire_of_Thessalonica" id="mwvA" rel="mw:WikiLink" title="Empire of Thessalonica">Empire of Thessalonica</a></b> to recover Constantinople and re-establish the <a href="./Byzantine_Empire" id="mwvQ" rel="mw:WikiLink" title="Byzantine Empire">Byzantine Empire</a> failed when it was defeated by the <a href="./Second_Bulgarian_Empire" id="mwvg" rel="mw:WikiLink" title="Second Bulgarian Empire">Bulgarians</a> at the <a href="./Battle_of_Klokotnitsa" id="mwvw" rel="mw:WikiLink" title="Battle of Klokotnitsa">Battle of Klokotnitsa</a>?