True. North America covers about 16.5% of Earth's land area. It includes Canada, the United States, Mexico, all Central American countries, and the Caribbean island nations. Greenland (autonomous territory of Denmark) is also part of North America by geography. The continent spans from the Arctic Ocean to the Darién Gap.

False. The Missouri River (3,767 km / 2,341 mi) is slightly longer than the Mississippi (3,730 km / 2,318 mi). However, the Mississippi-Missouri river system combined is the fourth longest in the world (6,275 km / 3,900 mi). The Mississippi has the largest drainage basin in North America.

True. Denali is the third most topographically prominent peak in the world after Mount Everest and Aconcagua. The mountain experiences extreme weather, with winter temperatures dropping below -40°C (-40°F). It was renamed from Mount McKinley to Denali (meaning "The High One" in Koyukon Athabaskan) in 2015.

True. The Great Lakes hold approximately 22,671 km³ (5,439 cubic miles) of water, enough to cover the entire contiguous United States to a depth of 3 meters (9.5 ft). Lake Superior is the largest by area (82,100 km² / 31,700 sq mi). Only Lake Michigan is entirely within the United States; the others border Canada.

True. Mexico City's metropolitan area has about 21.5 million residents. It was founded by the Aztecs in 1325 on an island in Lake Texcoco. Today, the city is sinking due to groundwater extraction (about 25 cm / 10 inches per year). It is the oldest capital city in the Americas.

True. Death Valley is part of the Mojave Desert. The Badwater Basin is the specific low point. The highest recorded temperature of 56.7°C (134°F) was recorded at Furnace Creek on July 10, 1913. Despite extreme heat, the valley receives less than 6 cm (2.4 in) of rain annually.

True. The Rockies are the eastern part of the North American Cordillera. The highest peak is Mount Elbert in Colorado (4,401 m / 14,440 ft). The range formed between 80 and 55 million years ago during the Laramide orogeny. Major rivers including the Colorado, Columbia, Missouri, and Rio Grande originate in the Rockies.

True. Canada's coastline includes the mainland coast and the coasts of over 52,000 islands. It borders the Pacific, Arctic, and Atlantic Oceans. Indonesia (54,716 km) and Russia (37,653 km) are distant seconds. Canada also has the world's largest number of lakes (over 2 million), containing about 20% of the world's fresh water.

True. The Panama Canal opened in 1914, cutting travel distance between the Atlantic and Pacific by about 15,000 km (9,300 mi). The canal uses a system of locks and is 82 km (51 mi) long. Central America is part of the Pacific Ring of Fire, with numerous active volcanoes. The region is a biodiversity hotspot.

False. Greenland is an autonomous territory within the Kingdom of Denmark, not an independent country. It has self-government but Denmark controls foreign affairs and defense. The Greenland ice sheet is the second largest ice body in the world (after Antarctica). Greenland's population is about 56,000, mostly Inuit.