Completed in 1856, California's first railroad ran 22 miles between Sacramento and which future prison town?

Which Berlin landmark, completed in 1791, reopened in 1989 after being closed for 28 years? Completed in 1825, which New York waterway cost more than $7 million to build? Completed in 1843, the column in London's Trafalgar Square is topped by a statue of which naval hero? Completed in 1849, the Chain Bridge over which river linked the cities of Buda and Pest? The nickname of the Great Bell at Westminster, cast in 1858, is often said to honor commissioner of works Sir Benjamin… Completed in 1869, which waterway has been nicknamed "the Highway to India"? Completed in 1914, which canal provides a shortcut between the Atlantic and Pacific oceans? Completed in 1916, which Russian railroad is the longest in the world?