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 is a bigger thorn when it comes to NAFTA. There are more NAFTA dispute cases between Canada and the U.S. than between Mexico and the U.S. In recent years, there have had more trade tensions with the country north of the border than south.