Simplify the following text for a Grade 12 native English-speaking person.
Original: Ante PaveliÄ ( 14 July 1889 â `` 28 December 1959 ) was the founding member of the Croatian national socialist\/fascist UstaÅ e movement and terrorist organization in the 1930s .
Simplified: Ante PaveliÄ ( 14 July 1889 â `` 28 December 1959 ) was a Croatian fascist leader , revolutionary , and politician .