Complex sentence: During the Arsacid Dynasty of the Kingdom of Armenia, it served as the main city of the province of Ayrarat and the capital of its Aragatsotn district from which the Amatuni noble family ruled.
Split into simpler sentences: During the Arsacid Dynasty of the Kingdom of Armenia, it served as the main city of the province of Ayrarat. It was also the capital of its Aragatsotn district from which the Amatuni noble family ruled.