MDCXLVIII is the Roman numeral representation of the year 1648. In this numeral, "M" stands for 1000, "D" for 500, "C" for 100, "XL" for 40, and "VIII" for 8. When combined, these values total 1648. The year 1648 is significant in history, particularly for the conclusion of the Thirty Years' War in Europe. This conflict involved many European powers and had profound effects on the political landscape, leading to the Peace of Westphalia, which established principles of state sovereignty and laid the groundwork for modern international relations.