What is the significance of the symbols and colors of the flag?

Answer 1

England's flag has a white background with a red cross through it.Colors: Red and White. White background with red cross

The red cross appeared as an emblem of England during the Middle Ages and the Crusades and is one of the earliest known emblems representing England.

The red cross on the white background is the symbol of St George, the patron saint of England.

The Union Flag, the flag of the United Kingdom of England, Scotland and Northern Ireland, is a mixture of the flags of England, Scotland and Ireland. The blue is from the white x-shaped cross of St Andrew on a blue background of Scotland.

England's flag (not the British flag) is a red cross on a white background. This flag is the emblem or cross of St. George, the patron saint of England.