What do they do in the cenmentary?

What is helleric? Who told Lewis and Clark to go to the West? Why was Justinian I's code of laws important? What year was mercantilism started? How the invention of wheel came out? When was the first calendar created? Who came up with the Trojan horse ploy? How did the Cold War shape East Asia? What was a medieval villein? What is the meaning of the word centralisation? What is a chronological flow chart? What is the meaning of your storied pomp? American law is derived largely from Roman law true or false? What is the original name for clock? Who was ruling when Christianity became the official religion? What did the reign of Augustus begin? What is Charlemagne best known for doing? What is technology history? What biases might Cody have had in telling the story of the West? When did clocks become popular?