Begun over 2,000 years ago, this barrier stretches thousands of miles across northern China.
What is the Great Wall of China?
This is the largest planet in our solar system.
What is Jupiter?
He was the first President of the United States.
Who is George Washington?
This is the largest ocean on Earth.
What is the Pacific Ocean?
This is the product of 7 × 8.
What is 56?
This Mongol leader united the tribes and built the largest contiguous land empire in history.
Who is Genghis Khan?
Botanically a fruit, this red ingredient is usually treated as a vegetable in cooking.
What is a tomato?
This document, adopted in 1776, declared the colonies independent from Britain.
What is the Declaration of Independence?
This is the tallest mountain on Earth above sea level.
What is Mount Everest?
This is the square root of 144.
What is 12?
The storming of this Paris prison in 1789 sparked the French Revolution.
What is the Bastille?
This gas makes up about 78% of Earth's atmosphere.
What is nitrogen?
This 1803 deal with France doubled the size of the United States.
What is the Louisiana Purchase?
This African country is home to the pyramids of Giza.
What is Egypt?
The interior angles of any triangle add up to this many degrees.
What is 180?
This 1648 set of treaties ended the Thirty Years' War and shaped modern ideas of state sovereignty.
What is the Peace of Westphalia?
This Italian polymath painted the Mona Lisa.
Who is Leonardo da Vinci?
This 1863 Lincoln speech opened with "Four score and seven years ago."
What is the Gettysburg Address?
This is the largest country in the world by land area.
What is Russia?
This theorem states that a² + b² = c² for a right triangle.
What is the Pythagorean Theorem?
This ancient lighthouse stood in the harbor of Alexandria, Egypt.
What is the Lighthouse of Alexandria (Pharos)?
This is the hardest naturally occurring substance on Earth.
What is diamond?
Ratified in 1920, this amendment granted women the right to vote.
What is the 19th Amendment?
This South American range is the longest continental mountain range in the world.
What are the Andes?
This is the value of 2 raised to the 10th power.
What is 1,024?