This empire built the Colosseum
Roman Empire
This country is home to the Great Wall.
China
He painted the Mona Lisa.
Leonardo da Vinci
This is the smallest unit of life.
This month has an extra day during a leap year.
February
This U.S. President issued the Emancipation Proclamation
Abraham Lincoln
This is the largest desert on Earth.
Sahara
She was the first woman to fly solo across the Atlantic.
Amelia Earhart
This planet is known as the Red Planet.
Mars
This board game requires players to capture their opponent's king.
Chess
This ship brought the Pilgrims to America in 1620.
The Mayflower
This U.S. state has the longest coastline.
Alaska
He was the first U.S. president.
George Washington
He invented the light bulb.
This animal is the symbol of the World Wildlife Fund.
Panda
This city was buried by Mount Vesuvius in 79 AD.
Pompeii
This river is the longest in the world
The Nile
This scientist developed the theory of relativity.
Albert Einstein
The process of converting sunlight into energy in plants is called this
photosynthesis
This color appears on the flags of more countries than any other
Red
This leader is known as the "Father of India."
Mahatma Gandhi
This mountain range separates Europe from Asia.
Ural Mountains
This South African became president after 27 years in prison.
Nelson Mandela
This is the only mammal capable of true flight.
Bats
This number is considered unlucky in many Asian cultures
Four