sentences:  Frederick I of Sweden
  
  Frederick I (; 28 April 1676 – 5 April 1751) was prince consort of Sweden from 1718 to 1720, and King of Sweden from 1720 until his death and (as "Frederick I") also Landgrave of Hesse-Kassel from 1730.He ascended the throne following the death of his brother-in-law absolutist Charles XII in the Great Northern War, and the abdication of his wife, Charles's sister and successor Ulrika Eleonora, after she had to relinquish most powers to the Riksdag of the Estates and thus chose to abdicate.