The region that is now Belarus was first settled by Baltic tribes in the 3rd century. The Przeworsk culture was discovered in what is today Poland, and the Zarubintsy culture further east in what is today Ukraine. Around the 5th century, the area was taken over by Slavic tribes. The takeover was partially due to the lack of military coordination of the Balts but the gradual assimilation of the Balts into Slavic culture was peaceful in nature.