England is the country that has a flag featuring a red cross on a white background. This flag, known as the Cross of St. George, symbolizes St. George, England's patron saint, and has been associated with England since the Middle Ages. The flag is prominently displayed during national celebrations and sporting events. The St. George's cross is also part of the Union Jack, which combines the flags of England, Scotland, and Ireland. The design reflects England's rich history and national identity, representing both the country and its maritime heritage.