World Cup: Feeling worldly? Here’s a quiz about international borders

Land lines
With so many fans from different nations watching the World Cup, here’s a test of your knowledge of borders.
The U.S. Men’s National Team faces the Netherlands, Saturday Dec. 3 at 7 a.m. Pacific.
Here’s a 15 question quiz. Keep your own score. 
 
Sources: Encyclopedia Britannica, National Geographic, U.S.G.S., CIA World Factbook, The Smithsonian, U.S. State Department International Boundary Study