Complex sentence: The two subsequent rounds of negotiations between Turkey and Transcaucasian republics were held from 11-26 May and from 31 May to 4 June 1918, when Turkey forced the newly independent Democratic Republic of Georgia into surrendering Batum, Ardahan, Akhaltsikhe and Akhalkalaki.
Split into simpler sentences: The two subsequent rounds of negotiations between Turkey and Transcaucasian republics were held from May 11 to May 26 and from May 31 to June 4,1918. On June 4,1918, Turkey forced the newly independent Democratic Republic of Georgia into surrendering Batum, Ardahan, Akhaltsikhe and Akhalkalaki.