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.
The United States of America (also referred to as the United States, the U.S., the USA, or America) is a federal constitutional republic comprising fifty states and a federal district. Central North America is where most of the States are situated. The 2 states that differ from this rule are Alaska and Hawaii. It is bordered by Canada and Mexico.