Here are some answers. What are the questions? 1) In North America. 2) They are Canada and Mexico. 3) From the Atlantic Ocean to the Pacific. 4) No, the weather in different places is different. 5) You can find there many kinds of land, for example, there are rocky mountains, great forests and wide grass lands. 6) The Rocky Mountains. 7) The Mississippi River. 8) More than 800 million people. 9) Fifty states. 10) It's Washington, D.C. 11) They mean District of Columbia. 12) New York City.