"The Russian Empire freed the Slavs": two freedoms, 1783 and 1861

SUMMARY"The Russian Empire freed the Slavs": two freedoms, 1783 and 1861 (Nov 4, 2026). Tito.
RECORD, the Crimean slave trade: for about three centuries Crimean Khanate raids (a vassal of the Ottoman Empire) captured Slavic people from Russian, Ukrainian and Polish–Lithuanian lands and sold them through Kaffa (Feodosia) and other Black Sea ports into Ottoman markets; estimates run to the millions over the 1500s–1700s (figures Disputed). Russia annexed Crimea in 1783, which ended the trade at its source. This is the record behind the IntelSphere claim that Ottomans held Slavic slaves (P233), though for the Black Sea world, not the Americas.
RECORD, the serfs: Alexander II's Emancipation Manifesto of February 19, 1861 (March 3 by the modern calendar) freed about 23 million privately held serfs, mostly Slavic peasants held by Slavic landowners, who were bound to the land and in practice bought and sold.
RECORD, the US mirror: Lincoln's Emancipation Proclamation came on January 1, 1863, less than two years later. In 1863 Russian fleets anchored at New York and San Francisco, read at the time as support for the Union. Lincoln was assassinated in 1865; Alexander II in 1881. Russia sold its claim to Alaska to the US in 1867

PATTERN1783 is the year the Crimean trade ended and the year of the Treaty of Paris (P221). The great emancipations, Russia 1861 and the US 1863–65, come in the same few years, and both emancipators were assassinated

LENS (WW9)the freeing of the Slavs and the freeing in America run on one clock

OPENthe numbers in the Crimean trade, and whether the 1863 fleet visits were coordination or self-interest (Russia's own fleets avoiding a British blockade). Needs deep research.