Complex sentence: Argentina acceded to the Geneva Protocol on 12 May 1969 and has been active in non-proliferation efforts, ratified the Biological Weapons Convention in 1979 and the Chemical Weapons Convention on 2 October 1995.
Split into simpler sentences: Argentina acceded to the Geneva Protocol on 12 May 1969. Argentina ratified the Biological Weapons Convention in 1979 and the Chemical Weapons Convention on 2 October 1995.