This element, with the chemical symbol O, is essential for human respiration.
Oxygen
This planet is known as the “Red Planet” because of its reddish appearance.
Mars
This famous ship sank in 1912 after hitting an iceberg on its maiden voyage.
Titanic
This sport features the famous tournament called Wimbledon.
Tennis
This is the largest ocean on Earth.
Pacific Ocean
This board game involves buying properties like Boardwalk and Park Place.
Monopoly
This device, invented by Alexander Graham Bell, allows people to transmit voices over long distances.
Telephone
This wall once divided East and West in a major European capital from 1961 until 1989.
Berlin wall
This country won the FIFA World Cup 2022.
Argentina
This country is both a continent and a nation.
Australia
This scientist proposed the theory of relativity and won the 1921 Nobel Prize in Physics.
Albert Einstein
This ancient wonder of the world stood in Alexandria and guided ships into the harbor.
Lighthouse of Alexandria
This 19th-century ideology, developed by Karl Marx and Friedrich Engels, called for a classless society and criticized capitalism.
Communism
This Olympic event is a race of 42.195 kilometers.
Marathon
This Asian country has the largest population in the world as of the 2020s
India
This vitamin, produced in the skin through sunlight exposure, is important for calcium absorption and bone health.
Vitamin D
This Italian artist painted the ceiling of the Sistine Chapel in Vatican City during the Renaissance.
Michaelanglo
This 1648 treaty ending the Thirty Years' War is often cited as the foundation of the modern system of sovereign states in international relations.
Treaty of Westphalia
This sport uses terms like “strike,” “spare,” and “gutter ball.”
Bowling
This South American river is the largest by discharge of water in the world.
Amazon river
This longest bone in the human body runs from the hip to the knee.
Femur
This economic theory, associated with Adam Smith, argues that markets regulate themselves through the “invisible hand.”
Free market capitalism
This 18th-century revolution began in 1789 and overthrew the monarchy of Louis XVI.
French Revolution
This Jamaican sprinter holds the world record in both the 100-meter and 200-meter races.
Usian Bolt
This U.S. state is separated from the mainland and lies northwest of Canada.
Alaska