Complex sentence: Najran is known as an ancient settlement ground for Christians in the Arabian peninsula; in fact the population has signed the famous "Najran Pact" in the 7th century with the Prophet Mohammed, promising them fair treatment as subjects of the newly conquered territories.
Split into simpler sentences: Najran is known as an ancient settlement ground for Christians in the Arabian peninsula. In fact, the population has signed the famous "Najran Pact" in the 7th century with the Prophet Mohammed, promising them fair treatment as subjects of the newly conquered territories.