A queen in Australia

My first post on any blog...hmmm

I read today that the Queen of England is the constitutional head of Canada. She is the head of state of Australia too....I would never accept a person as a Queen or King. It is so archaic. I was shocked to read that even in these developed countries they have constitutional monarchy. When I was a kid...I read about Kings in comic books and fables. It is a reality is some news. Moreover these countries have monarch heads from different countries is even more BIZARRE to me.

Read:
http://www.answers.com/topic/commonwealth-of-nations
http://www.answers.com/monarchy%20in%20Canada

Actually, I had seen many coins of Canada and the Queen on the heads side of the penny but never thought why?

http://www.answers.com/main/ntquery;jsessionid=2r6iagogb0jq4?tname=penny-canadian-coin&method=6&sbid=lc08a