Complex sentence: With some formal caveats, Schmidt (2007), p.120 the House of Pomerania received the Duchy of Pomerania as as an immmediate imperial fief, in turn the Electors of Brandenburg were granted the right of succession.
Split into simpler sentences: With some formal caveats, Schmidt (2007), p.120 the House of Pomerania received the Duchy of Pomerania as an immmediate imperial fief. In turn the Electors of Brandenburg were granted the right of succession.