The intestine (colon or ileum) is brought to the stoma to create an artificial outlet for the gastrointestinal tract (ostomy). This allows safe removal of waste material from food digestion when a portion of the intestine is removed or needs time to heal.
Key difference: The main difference between USA and Canada is in their government. USA is a federal constitutional republic, whereas Canada is a constitutional monarchy. Further differences include geographic and climate. Canada also differs in its stance against some political and cultural aspects.
Canada (as well as the USA) is part of the North American continent. Yes, I believe Canada is apart of the United States. They would like to be apart of the US, and because I am such a caring and generous person, I am letting Canada join our United States Party.