Complex sentence: It was renamed to the Gorno-Altai Republic on 3 July 1991, and became the Altai Republic on 31 March 1992, and is now a federal subject of the Russian Federation.
Split into simpler sentences: It was renamed to the Gorno-Altai Republic on 3 July 1991, and became the Altai Republic on 31 March 1992. It is now a federal subject of the Russian Federation.