Complex sentence: According to Konstantine Pitskhelauri, this expansion started even earlier, at the end of the 5th and in the 4th millennia B.C., large masses of Uruk migrants had settled in the South, and later in the North Caucasus.
Split into simpler sentences: According to Konstantine Pitskhelauri, this expansion started even earlier, at the end of the 5th millennium BC, and continued in the 4th millennium. Large masses of Uruk migrants had settled in the South, and later in the North Caucasus.