Complex sentence: The Yugoslav First Federal Basketball League was the name of two successive national basketball leagues in the former nations of SFR Yugoslavia, from 1945 to 1992, and FR Yugoslavia/Serbia and Montenegro, from 1992 to 2006.
Split into simpler sentences: The Yugoslav First Federal Basketball League was the name of two successive national basketball leagues in the former nation of Yugoslavia. The former SFR Yugoslavia League from 1945 to 1992, and the former FR Yugoslavia/Serbia and Montenegro League, from 1992 to 2006.