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- The United States successfully sent astronauts to the moon in 1969.
- The telephone, airplane, credit card, and computer were invented in the United States.
- The United States has the third largest population in the world.
- Nearly 80 percent of all residents of the United States live in cities.
- The United States has more than 250,000 rivers.
- More than 50 volcanoes in the United States have erupted within the last two hundred years.
- Although the Missouri River is longer, the Mississippi River is the largest river in the United States. It empties more than half a million cubic feet of water into the Gulf of Mexico every second.
- The United States has 3,958,150 miles (6,370,031 km) of highways, and many more miles of roads.
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View detail map as PDF
View outline map as PDF |
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The U.S. flag was adopted in 1777. The 13 stripes represent the 13 original colonies. The 50 stars stand for the 50 states. |
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The bald eagle, a native of North America, became the national bird in 1782. It is a symbol of strength and freedom. |
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