This wall divided East and West Berlin until it fell in 1989.
The Berlin Wall
This empire, ruled by Julius Caesar and Augustus, dominated the Mediterranean for centuries.
The Roman Empire
The only continent located entirely in the Southern Hemisphere.
This ancient trade network connected China with the Mediterranean world for centuries.
The Silk Road
This language has the most native speakers in the world.
What is Mandarin Chinese
This U.S. president issued the Emancipation Proclamation during the Civil War.
Abraham Lincoln
This scientist developed the theory of relativity.
Albert Einstein
This element has the highest electrical conductivity of any metal.
This organ in the human body produces insulin.
Pancreas
This unit measures earthquake magnitude on a logarithmic scale developed in 1935.
Richter Scale
This ancient civilization built Machu Picchu high in the Andes Mountains.
Incas
This 1919 treaty formally ended World War I and imposed heavy reparations on Germany.
Treaty of versailles
This Country has the longest coastline in the world.
Canada
This South American capital city sits at the highest elevation of any capital in the world, about 3,650 meters (11,975 ft) above sea level.
Bolivia, La Paz, Sucre
This country has the most islands in the world, with over 200,000.
This ancient Greek city-state was known for its military society and warrior culture.
This 1803 Supreme Court case established the principle of judicial review in the United States.
Marbury V. Madison
This element, atomic number 92, is the heaviest naturally occurring element commonly found in Earth’s crust.
What is Uranium
This is the only metal that is liquid at room temperature.
What is Mercury.
This country has the largest Muslim population in the world.
Indonesia
This 14th-century Moroccan traveler documented his journeys across Africa, the Middle East, India, and China.
Ibn Battuta
This dynasty ruled China when the Great Wall was first connected into a single defensive system
This narrow waterway connects the Persian Gulf to the Gulf of Oman.
Strait of Hormuz
This African lake is the world’s second-deepest lake after Lake Baikal.
What is Lake Tanganyika?
This country has the largest number of neighbors in the world, sharing borders with 14 different countries.
China