Ukraine

Global geopolitical rivalry and ideological competition centered on the United States and Soviet Union from the postwar era to the breakup of the USSR.

A war between the Polish–Lithuanian Commonwealth and the Ottoman Empire, involving Crimean Tatar forces and fought chiefly over Podolia and neighboring Ukrainian territories.

Federative polity joining the Kingdom of Poland and Grand Duchy of Lithuania from the Union of Lublin in 1569 until the third partition of 1795, with a shared monarch and parliamentary institutions.

Global armed conflict from 1939 to 1945, including war in Europe, Asia and the Pacific, mass civilian suffering and major geopolitical change.

On 11 November 1673, Polish–Lithuanian Commonwealth forces under John Sobieski defeated an Ottoman army at Khotyn, strengthening the Commonwealth’s position in the ongoing war.

The catastrophic April 26, 1986 accident at Reactor No. 4 of the Chernobyl Nuclear Power Plant, followed by radioactive releases, evacuation, emergency response, and an extensive containment effort.

Grand Hetman of the Crown and commander of the Commonwealth forces victorious at Khotyn in 1673; he became king later that year.

City in western Ukraine.

Country in West Africa.

Geographical region of Russia comprising North Asia.

Nuclear power station near Pripyat, site of the 1986 Chernobyl disaster.

Strategic fortress in Podolia, besieged and captured by Ottoman forces in 1672.

Fortress on the Dniester and site of the Commonwealth victory over the Ottoman army on 11 November 1673.

Southeastern region of the Commonwealth and the principal theater of the 1672 Ottoman campaign.

City in Poland.