What are two reasons that Persia and Rome fought so often?

Persia and Rome frequently clashed due to territorial ambitions and control over trade routes, particularly in the regions of the Near East and the eastern Mediterranean. Both empires sought to expand their influence and secure valuable resources, leading to conflicts over borders and regional dominance. Additionally, ideological differences, including cultural and religious factors, fueled hostilities between the predominantly Zoroastrian Persian Empire and the Christian Roman Empire.