An informal name for the British flag is the Union what?

Question

What is the basic design of the new state flag adopted by The Republic of the Union of Myanmar on 21 October 2010 to replace the former flag that had been in use since 1974?

Answer 1

Jack
"Jack", among its many meanings, referred to a small flag flown from the mast mounted at the end of a ship's bowsprit, and may refer in this case to the fact that by 1627 a small version of the British flag seems to have flown commonly in this position; by 1674, this flag was described formally as ‘His Majesty’s Jack’ and in common usage – officially acknowledged – as the Union Jack. It was still named the "Union Flag" on land, but the distinction relaxed; in 1908 the UK Parliament approved the use of either Union Flag or Union Jack, stating that ‘the Union Jack should be regarded as the National flag’.