Complex sentence: To protect the Habsburg inheritance, he coerced, cajoled, and persuaded the crowned heads of Europe to accept the Pragmatic Sanction, through which they acknowledged any of his legitimate daughters as the rightful Queen of Bohemia, Hungary and Croatia, and Archduchess of Austria.
Split into simpler sentences: To protect the Habsburg inheritance, he coerced, cajoled, and persuaded the crowned heads of Europe to accept the Pragmatic Sanction. In this agreement, they acknowledged any of his legitimate daughters as the rightful Queen of Bohemia, Hungary and Croatia, and Archduchess of Austria.