Turkey's historical region that was once part of the Roman Empire is Anatolia, also known as Asia Minor. This area forms the majority of modern-day Turkey and has been a crossroads of civilizations for millennia. It was a significant part of the Roman Empire, serving as a crucial center of trade, culture, and governance. After the decline of the Roman Empire, Anatolia became pivotal in the Byzantine Empire and later the Ottoman Empire. Its rich history is reflected in numerous archaeological sites, ancient cities, and diverse cultural influences, making it an essential region for understanding the historical interactions between Europe and Asia.