Congress Poland (Polish: Królestwo Polskie, Russian: Царство Польское) was a historical Polish state created in 1815 by decision of Congress of Vienna as personal union with Russia.
The first king was Alexander I, who created the university of Warsaw in 1816. In the years 1830–1831, there was November Uprising, whose result was abolition of the kingdom in 1832 and incorporation to Russian Empire.
The constitution of the kingdom was adopted on 27 November 1830, but it was replaced by Tsar Nicholas I with Organic Status.
Under reign of the Alexander II a major liberal reforms took place, political amnesty, conciliatory measures in cultural and religious matters, and the creation of the Agricultural Society to tackle the peasant question. In 1867, after January Uprising (1863-1864) the kingdom was transformed into province of Russian Empire called Vistula Land.