Natural Borders
This type of border is formed by rivers, mountains, or oceans.
What is a natural border?
This type of border is created by governments and often appears as straight lines on maps.
What is a man-made border?
A country is an example of this type of political unit.
What is a political unit?
This river forms part of the border between Texas and Mexico.
What is the Rio Grande?
When a border follows a river on a map, it is most likely this type of boundary.
What is a natural boundary?
The Rio Grande helps form the border between these two countries.
What are the United States and Mexico?
Many African country borders appear straight because they were divided by this group of people in the 1800s.
Who were European colonial powers?
This is the political unit directly below a country in the United States.
What is a state?
This state borders the most other U.S. states.
What is Tennessee?
If a border is a straight line across a desert, it is most likely this type of boundary.
What is a man-made boundary?
This mountain range forms a natural border between France and Spain.
What are the Pyrenees Mountains?
This U.S. state shares a straight-line border with Utah and Arizona due to survey lines.
What is Colorado?
Austin is the capital city of this political unit.
What is Texas?
This natural feature forms much of the eastern boundary of California.
What is the Sierra Nevada Mountains?
This continent has the most examples of straight-line political borders.
What is Africa?
This major river separates parts of Eastern and Western Europe and flows through several countries.
What is the Danube River?
This border wall was built to separate East and West Berlin during the Cold War.
What was the Berlin Wall?
This political unit contains cities, counties, and districts within it.
What is a state?
This Great Lake forms part of the border between the United States and Canada near Michigan.
What is Lake Superior?
This canal creates a man-made boundary that separates North and South America.
What is the Panama Canal?
This mountain range separates India from China and Nepal.
What are the Himalayas?
This African country is almost perfectly rectangular because of colonial boundary decisions.
What is Egypt?
This political unit has its own government, defined territory, and population.
What is a sovereign country?
This U.S. state is separated from the mainland by water and is located northwest of Canada.
What is Alaska?
If a country is completely surrounded by another country, it is called this.
What is an enclave?