What A Stretch!
This children's toy was originally made from steel wiring.
What is a Slinky?
This body of water is famous for being the origin of a Greek letter.
What is the Nile River?
This period of the French Revolution stands out for its especially ruthless nature.
What is the Reign of Terror?
This pattern is found on chessboards.
What is a Checkerboard?
This language isolate comes from a home culture with a history of a seafaring culture and whaling.
What is Basque?
This is the physical property that allows an item to return to its previous shape.
What is Elasticity or Compliance?
This biome makes up around a third of all land on Earth, but it is best known for being concentrated in the Central USA, Eastern Europe, and the African savanna.
What is Plains or Flatland or Prairie?
This is the earlier of the two Russian revolutions in 1907.
What is the February Revolution?
This is the most common type of symmetry found in the Animal Kingdom.
What is Bilateral Symmetry?
This Gallic noble leader led Gallic tribes in a revolt against Julias Caesar during the Gallic Wars.
Who is Vercingetorix?
This is the SI unit for the elastic modulus of a given material.
What is a Pascal?
This is the country with the longest land border with France.
What is Brazil?
This important revolutionary was murdered by the Freikorps for her role in the failed German Revolution of 1918.
Who is Rosa Luxemburg?
This Chinese game is played by rearranging seven polygonal tiles.
What are Tangrams?
This was the last territorial acquisition in the contiguous United States, forming the country's current border.
What is the Gadsden Purchase?
This is the primary chemical constituent of natural rubber.
What is Polyisoprene?
This line is a boundary within Indonesia, where north of the line flora, fauna, and ecosystems are primarily Asiatic; whereas, south of the line, they are primary Polynesian.
What is the Wallace Line?
This anarchist coalition played the most pivotal role in the 1936 Catalonian and Aragonese uprising during the Spanish Civil War.
What is the CNT-FAI?
This is the primary symmetry found in fractals.
What is Self-Similarity?
This is the most common organic stereogenic element from which chirality in molecules occurs.
What is Carbon?
This is the common name for the constant factor characteristic in Hooke's Law.
What is Stiffness?
This soil, abundant in Ukraine and the Great Plains, is often referred to as one of the most fertile soils in the world.
What is Chernozem or Black Soil?
This victim of the Great Purge was referred to as the "Red Napoleon" of the Russian Civil War.
Who is Mikhail Nikolayevich Tukhachevsky?
This is the name for this pattern in Conway's Game of Life.
What is a Glider?
This principle of organization for any Communist Party holds that majoritarian democracy and complete dependence on the center is impossible to be used as the structural basis for a party.
What is Organic Centralism?