There is debate about the exact dates when Burkina Faso's many ethnic groups arrived to the area. The Proto-Mossi arrived in the far Eastern part of what is today Burkina Faso sometime between the 8th and 11th centuries, the Samo arrived around the 15th century, the Dogon lived in Burkina Faso's north and northwest regions until sometime in the 15th or 16th centuries and many of the other ethnic groups that make up the country's population arrived in the region during this time.