the thirty years ' war ended Process_end with the treaty Ratification of UNK and the treaties of UNK , part of the wider peace of westphalia .

in the 1648 treaty of westphalia that ended Process_end the thirty and eighty years ' wars , it was ceded to the dutch republic .

later , the peace of westphalia and the spanish war of succession in the 17th and 18th centuries respectively left the austrian empire as the sole firm possession of the house of habsburg .