Countries of North American continent: Canada, Mexico and United States of America. North America is sorounded with three Oceans: Atlantic, Pacific and Arctic Ocean.
Estimates on how many people lived in North America in pre-Columbian era are ranging from two million to up to twenty million.
Christopher Columbus is the first European to discover the Americas in 1492 (but thinking he got to Asia).
Population of North America (Canada, Mexico and USA) is at around 445 million people (approximate number for 2007).
Longest river in North America is the Mackenzie river (Canada); 4 240 km (2 635 miles).
Highest Mountain in North America is McKinley (Alaska, USA); 6 194 meters.
Herds of buffalo (bison) roamed North America until 18-19 century. Estimates range from 30 to 75 million. By the end of 19 century there was less then 500 buffalos left.
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