A crown treaty between the Holy Roman Emperor and the Elector of
Brandenburg recognises the latter as King of Prussia, on the
condition that he will provide military assistance for the imminent
war against France, will support the Austrian Habsburgs in Imperial
elections, and will support the Hapsburg family when voting in the
Diet.
Citation:
Editors. "Crown treaty recognises the Elector of Brandenburg as King of Prussia".
The Literary Encyclopedia. First published 01 April 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16986, accessed 19 June 2013.]