the British Empire as the Slavery Abolition Act 1833 comes into force, although it remains legal in the possessions of the East India Company until the passage of the Indian Slavery Act, 1843. 1834 – Construction begins on the Wilberforce Monument in Kingston Upon Hull. 1842 – The Lombard Street riot erupts in Philadelphia, Pennsylvania, United States. 1849 – Joven Daniel wrecks at the coast of Araucanía, Chile, leading to allegations that local Mapuche tribes murdered survivors and kidnapped Elisa Bravo. 1855 – The first ascent of Monte Rosa, the second highest summit in the Alps. 1863 – At the suggestion of Senator J. V. Snellman and the order of Emperor Alexander II, full rights were promised to the Finnish language by a language regulation in the Grand Duchy of Finland. 1876 – Colorado is admitted as the 38th U.S. state. 1893 – Henry Perky patents shredded wheat. 1894 – The Empire of Japan and Qing China declare war on each other after a week of fighting over Korea, formally inaugurating the First Sino-Japanese War. 1901–present 1907 – The start of the first Scout camp on Brownsea Island, the origin of the worldwide Scouting movement. 1911 – Harriet Quimby takes her pilot's test and becomes the first U.S. woman to earn an Aero Club of America aviator's certificate. 1914 – The German Empire declares war on the Russian Empire at the opening of World War I. The Swiss Army mobilizes because of World War I. 1927 – The Nanchang Uprising marks the first significant battle in the Chinese Civil War between the Kuomintang and Chinese Communist Party. This day is commemorated as the anniversary of the founding of the People's Liberation Army. 1933 – Anti-Fascist activists Bruno Tesch, Walter Möller, Karl Wolff and August Lütgens are executed by the Nazi regime in Altona. 1936 – The Olympics opened in Berlin with a ceremony presided over by Adolf Hitler. 1937 – Josip Broz Tito reads the resolution "Manifesto of constitutional congress of KPH" to the constitutive congress of KPH (Croatian Communist Party) in woods near Samobor. 1943 – World War II: Operation Tidal Wave also known as "Black Sunday", was a failed American attempt to destroy Romanian oil fields. 1944 – World War II: The Warsaw Uprising against the Nazi German occupation breaks out in Warsaw, Poland. 1946 – Leaders of the Russian Liberation Army, a force of Russian prisoners of