Built in 1831, whose first mechanical reaper resembled a two-wheeled horse-drawn chariot?

Built in 1791, the Brandenburg Gate is one of which capital city's most famous landmarks? Built in 1802, the tugboat Charlotte Dundas was innovative in having which type of engine? The first private yacht to cross the Atlantic, built in 1816, shared its name with which ancient Nile craft? Built around 1818, the Scottish canal boat Vulcan was one of the first vessels made mainly of which metal? Built in 1865, America's first successful oil pipeline was 2 inches wide and ran about 5 miles in which state? Abbot Hall in Marblehead, Massachusetts, built in 1876, displays which famous patriotic painting? Built in 1876, the Flying Horses Carousel, a National Historic Landmark, is on which Massachusetts island? Built in 1895, the original Quadrangle dormitories of which Philadelphia university were modeled on Oxford and Cambridg…