Original sentence: The ongoing conflict with Azerbaijan over the ethnic Armenian-dominated region of Nagorno-Karabakh (which was part of Soviet Azerbaijan) and the breakup of the centrally directed economic system of the former Soviet Union contributed to a severe economic decline in the early 1990s
Edited sentence: The ongoing conflict with Azerbaijan over the ethnic Armenian-dominated region of Nagorno-Karabakh(which was part of Soviet Azerbaijan) and the breakup of the centrally directed economic system of the former Soviet Union contributed to a severe economic decline in the early 1990s