Crimean War
Sevastopol falls and Russia loses its Black Sea fleet

In 1853–1856 Russia fought the Ottoman Empire, Britain, France and Sardinia. After a 349-day siege Sevastopol fell, and under the Treaty of Paris Russia lost the right to keep a navy in the Black Sea.
Wikipedia (Russian) · Wikipedia (English) · 19th century
Meanwhile around the world (±25 years)
Europe
- 1845–1852 Great Famine in Ireland — 8 years earlier
- 1848–1849 Revolutions of 1848 — 5 years earlier
- 1848 The Communist Manifesto — 5 years earlier
- 1859 Darwin's On the Origin of Species — 6 years later
- 1861 Unification of Italy — 8 years later
Middle East
- 1828 Treaty of Turkmenchay — 25 years earlier
- 1839 The Edict of Gülhane opens the Tanzimat — 14 years earlier
- 1839–1842 First Anglo-Afghan War — 14 years earlier
- 1876–1878 The first Ottoman constitution — 23 years later
Africa
- c. 1835–1846 The Great Trek — 18 years earlier
- 1847 Liberia declares independence — 6 years earlier
- 1869 Opening of the Suez Canal — 16 years later
Asia
- c. 1831 Hokusai's Great Wave off Kanagawa — 22 years earlier
- 1839–1842 First Opium War — 14 years earlier
- 1853–1854 Commodore Perry's Black Ships — same year
- 1868 Meiji Restoration — 15 years later
- 1876–1878 Great Famine in India — 23 years later
Americas
- 1846 First public demonstration of ether anaesthesia — 7 years earlier
- 1846–1848 Mexican–American War — 7 years earlier
- 1861–1865 American Civil War — 8 years later
- 1863 Emancipation Proclamation — 10 years later
- 1876 Invention of the telephone — 23 years later
Oceania
- 1851 The Australian gold rushes — 2 years earlier
Alive at the time
- Charles Darwin (aged 44)
- Abraham Lincoln (aged 44)
- Karl Marx (aged 35)
- Queen Victoria (aged 34)
- Fyodor Dostoevsky (aged 32)
- Leo Tolstoy (aged 25)
- Dmitri Mendeleev (aged 19)
- Pyotr Ilyich Tchaikovsky (aged 13)
- Thomas Edison (aged 6)
- Vincent van Gogh (aged 0)