German revolutions of 1848–49 used on today's national flag of Germany as a symbol of the Republican movement and of the unity among the German-speaking people. Activism for liberal reforms spread through many of the German states, each of which had distinct revolutions. They were also inspired by the street demonstrations of workers and artisans led in Paris, France, from February 22 through 24, 1848, which resulted in the abdication by King Louis-Philippe of France and his exile in Britain. In France the revolution of 1848 became known as the February Revolution. The revolutions spread from France across Europe; they erupted soon thereafter in
Diseases and epidemics of the 19th century 1854, it entered Venezuela; Brazil also suffered in 1855. The fourth cholera pandemic (1863–1875) spread mostly in Europe and Africa. At least 30,000 of the 90,000 Mecca pilgrims died from the disease. Cholera ravaged northern Africa in 1865 and southeastward to Zanzibar, killing 70,000 in 1869–70. Cholera claimed 90,000 lives in Russia in 1866. The epidemic of cholera that spread with the Austro-Prussian War (1866) is estimated to have taken 165,000 lives in the Austrian Empire. In 1867, 113,000 lost their lives to cholera in Italy. and 80,000 in Algeria. Outbreaks in North America in 1866–1873 killed some 50,000 Americans.