Scientists have analyzed DNA from 2,000-year-old grape seeds discovered in Tuscany, Italy, rewriting the understanding of Roman viticulture. The analysis indicates that grapevines cultivated during the Roman Empire originated from a wider geographical area than previously believed, specifically from modern-day Croatia. This discovery suggests a sophisticated and extensive agricultural network existed throughout the Roman Empire, facilitating the trade and cultivation of diverse grape varieties. Researchers found genetic links between the ancient Tuscan vines and wild grapes still growing in Croatia, indicating deliberate transport and cultivation. The findings challenge the assumption that Roman wine production relied solely on local grape varieties. This research provides new insights into the economic and agricultural practices of the Roman period and highlights the importance of genetic analysis in understanding ancient trade routes. The study demonstrates the Romans actively managed and disseminated grapevine varieties across their vast empire.