it's only been changed once
The flag of the United States of America was officially changed 27 times: From our first flag in 1777 through the current flag in 1960.
The british have never had a flag to change
five
3
five
3
0 times the flag stayed the same
There are no triangles.
3
There are six stars on the Australian flag: the Commonwealth Star, which has seven points, and five stars representing the Southern Cross constellation.
Yes there is, and though it is being rapidly changed by global forces, it still retains many elements from earlier times.
The United States flag has been changed 26 times since 1777.