Nicholas I of Russia

The 11th Emperor of Russia (1825–1855)

military conflict fought between October 1853 – March 1856

Polish uprising against occupying Russian Empire from November 1830 to September 1831

1825 revolt and attempted coup in the Russian Empire

1828–1829 part of the Russo-Turkish wars

last major armed conflict between the Russian Empire and Qajar Iran

thumb|Bavarian Officer Pickelhaube thumb|right|Prussian police leather Pickelhaube

European country experiencing instability or impoverishment

Russian railway line

Bald–hairy () is a common joke in Russian political discourse, referring to the observation that the state leaders' succession is often from a bald or balding leader to a hairy one and vice versa. This consistent pattern can be traced back to as early as 1825, when Nicholas I succeeded his late brother Alexander as the emperor of Russia. Nicholas I's son Alexander II formed the first "bald–hairy" pair of the sequence with his father.

monument in Saint Petersburg (1859)

Secret police of Imperial Russia.

imperialist ideological doctrine of Russian emperor Nicholas I

1832 statute

German political-military conflict

painting by Guercino (Giovanni Francesco Barbieri). 1591-1666