The USA is on the North American continent.
The United States of America isn't a continent it is a country in North America.
europe
it is the thrid
As a result of European exploaration, the American continent was discovered.
The US and Canada cover most of North America
Antarctica
Asia
australia
Australia.
antarctica
The Sahara covers about one third of the African continent.
You may be thinking of the ice sheet, which covers 98% of the continent.
Brazil
African Union
Antarctica, which covers the south pole and a large surrounding area.
Pacific Ocean