This period extends along the first half of the 3rd millennium BC. Most significant was the reorganisation of the Danubians in the powerful Baden culture, which extended more or less to Austria-Hungary. The rest of the Balkans was profoundly restructured after the invasions of the previous period, but, with the exception of the Coțofeni culture, in a mountainous region, they show no eastern (or presumably Indo-European) traits. The new Ezero culture, in Bulgaria, shows the first traits of pseudo-bronze (an alloy of copper with arsenic), as does the first significant Aegean group, the Cycladic culture after 2800 BC.