What does the Union Jack stand for?
Combined flags of England (St. George's cross), Scotland (St. Andrew's cross) and Ireland (St. Patrick's cross).
It Means 'Union Of The House Of Jacob' As The United Kingdom Is
The Home To The Hebrew Israelites.
The Union Jack is the flag of United Kingdom of Great Britain and Northern Ireland, it is a combination of 3 flags:
St. George's Cross
St. Andrew's Cross
St. Patrick's Cross
that Australia is in the hands of the queen in England