In the fifteenth century however, a Habsburg Emperor, Frederick III, finally made it practically hereditary by the simple device of having his son elected heir-presumptive during his lifetime; successive Habsburgs adopted the practice as a family tradition. The same Frederick, a colorless but ambitious ruler, founded another Habsburg tradition, that of expansion by matrimony. “Bella gerant alii, tu, felix Austria, nube” (“Let others wage war, but you, happy Austria, marry”) became the unofficial Habsburg motto. Frederick’s son, Maximilian, (1459-1519) who married the Netherlands and a nice
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