The most notable example of such a move is the Kingdom of Hungary (Lands of the Crown of Saint Stephen), which achieved equal status to Austria (which exercised control over the "Cisleithanian" crown lands) in Austria-Hungary following the Austro-Hungarian Compromise of 1867.
The most striking example of such a development is the Kingdom of Hungary (Lands of the Crown of Saint Stephen), which achieved parity with Austria in Austria-Hungary following the Austro-Hungarian Compromise of 1867, mirroring the relationship between Austria and its "Cisleithanian" crown territories.