The Geto-Dacians were an ancient people who lived in the region that is now modern-day Romania and parts of surrounding countries. They are known for their rich culture, which included advanced agricultural practices, metalworking, and a complex social structure. The Geto-Dacians spoke a language related to the Thracian language and had a pantheon of gods, with Zalmoxis being one of the most significant deities. The Geto-Dacians were often in conflict with neighboring tribes and empires, including the Roman Empire. Their most famous leader, Decebalus, fought against Roman expansion in the 1st century AD. Ultimately, the Dacian Wars led to the conquest of Dacia by the Romans in 106 AD, marking the end of the Geto-Dacian state.