Complex sentence: Talking via video, Acemoglu partook in the Armenian Economic Association's annual conference in October 2013 held at the Yerevan State University, during which he argued that Armenia's problem is political, and not geographic, cultural, or geopolitical.
Split into simpler sentences: Talking via video, Acemoglu partook in the Armenian Economic Association's annual conference in October 2013 held at the Yerevan State University. Acemoglu argued at the conference that Armenia's problem is political, and not geographic, cultural, or geopolitical.