Eritrea
The Bilen in Eritrea represent around 2% of the country's population. They are primarily concentrated in the north-central areas, in and around the city of Keren, and south towards Asmara, the nation's capital. Many of them entered Eritrea from Kush (central Sudan) in the 8th century and settled at Merara, after which they went to Lalibela and Lasta. The Bilen then returned to Axum in Ethiopia's Tigray Province, and battled with the natives; in the resulting aftermath, the Bilen returned to their main base at Merara. The Bilen include adherents of both Islam and Christianity. They speak the Bilen as a mother tongue. Christian adherents are mainly urban and have intermingled with the Tigrinya who live in the area. Muslim adherents are mainly rural and have interbred with the adjacent Tigre.