The Unites States of Patrick

There is an awesome little website that allows you to create your own flag by meshing the flags of three different countries together. The first is your country of origin, the second is a country that has affected you, and the third is the place you would most like to visit.

Here is the Link: http://www.wearemulticolored.com

And here is my flag. Can you guess what the three countries are?