Kurgan hypothesis
Throughout the next few decades, the Kurgan hypothesis was the dominant theory on the subject of the end of the Cucuteni-Trypillia culture (among other related subjects of this period). Although today there are many who have challenged the Kurgan hypothesis, it still stands as a critically important theory that anyone interested in this historical period must confront. The theory's basic elements still offer substantial insights for students of history, regardless of how strongly they ultimately agree with its conclusions.