When were the terracotta warriors open to the public?

Who was murdered in the white tower in 1843? What farming activities does the water in the amazon river support? Is Cyprus in the Aegean Sea? How are stumps formed in the sea? How much commercial traffic did the Mississippi River support prior to the US Civil War? Why do Australians celebrate Christmas on the beach? What river runs south and west out of Canada along the Washington-Oregon border to the Pacific? Does the Hudson river connect to a great lake? The only European country with coastlines on the Atlantic Ocean Mediterranean Sea and the North Sea is? Why does Equality choose this new name for Liberty? What might happen if a forested area was replaced with an asphalt parking lot? What do climbers eat on Mt Everest eat? What is the best thing to see in Milan? What are the names of 5 rivers in Spain? Are the Himalayas and Mount Everest one of the seven wonders of the world? Why does water pressure affect the design of a dam? In 1985 what boats sunk in the Bering sea? What are The names of the wars on the arc de triomphe? What is the difference between a potentiometer and a Carey Foster's bridge? How do animals use waterfalls?