what is the difference between Great Britain and England? Which flag the blue and red or the red and white?

Answer 1

The United Kingdom of Great Britain and Northern Ireland (AKA United Kingdom, UK, Great Britain, Britain)
is made up of England, Scotland, Wales, Northern Ireland and other small,surrounding islands.
Their flag is the Union Jack (blue flag with red and white cross with the x through it,which you may have seen on jackets, etc. that Punk Rockers wear) which was composed of the flags of England (white with red cross), Scotland (blue with white x) and Ireland (white with red x).

Answer 2

Great Britain is the empire over which the monarchy rules along with it's commonwealth nations this is the blue and red flag the "union jack", England now is the isle which is a large island and is represented by that country with the red and white flag.