Extract the dates from this too: "The 19th (nineteenth) century began on January 1, 1801 (MDCCLXXI), and ended on December 31, 1900 (MD)[2]. The 19th century was dominated by significant events that defined the modern era: the Industrial Revolution, Napoleon's expansion of French military power, the American Civil War, the unification of Germany and Italy, the development of photography and cinema, the rise of nationalisms and nationalism, the rise of Marxism, and the dawn of the atomic era. These changed the political and social structure of the globe."