The Dacians were an ancient people who lived in the region that is now modern-day Romania and parts of Bulgaria, Moldova, and Hungary. They are known for their rich culture, which included impressive fortresses and a strong warrior tradition. The Dacians spoke a language related to Thracian and practiced a polytheistic religion, worshipping various gods and goddesses. In the early 2nd century AD, the Dacians came into conflict with the Roman Empire, leading to a series of wars. Ultimately, the Romans, under Emperor Trajan, conquered Dacia, integrating it into the empire. This conquest significantly influenced the region's culture and history, leaving a lasting legacy.