1) The USA border on Canada and Mexico. 2) Mountain chains in the USA are Cordilleras, Appalachians. 3) The Great lakes are situated in North America in USA and Canada. 4) Mississippi is the largest river in the country. 5) The Colorado flows south. 6) The Death Valley famous for the highest temperature in the world. 7) Many people want to see the Grand Canyon because the Grand Canyon is one of the deepest canyons in the world. 8) The Niagara Falls is the famous waterfall in the USA. 9) The Great Plains are situated in USA and Canada. 10) The White house and the Lincoln Memorial are two places of interest in Washington. 11) I don't know who were the first people to live on the continent of Australia. 12) People from Europe began to arrive in Australia in 1606.