How can 1,000 be written as a power of 10?

Which pop artist created "100 Soup Cans" in 1962? The presidential library at 1000 Beal Avenue in Ann Arbor, Michigan, honors which president? The June 1775 battle that cost about 1,000 British and 450 American casualties is named for which Charlestown hill? In 1979, about 1,000 Chinese protested officials' privileges in which Beijing square, far more famous for the protests… Cliffs about 1,000 feet high line the Arkansas River in which Colorado gorge, spanned by a famous suspension bridge? Which great river of Burma (Myanmar) flows past Mandalay to the Andaman Sea? Around the year 1000, which Norse explorer built houses and a shed for his ship in a land he called Vinland? Which U.S. state is nicknamed the "Land of 10,000 Lakes"?