Ukraine is a large country in Eastern Europe, second only to Russia in size. It shares borders with Russia, Belarus, Poland, Slovakia, Hungary, Romania, and Moldova, and also has coastlines along the Black Sea and the Sea of Azov. Kyiv is its capital and largest city, and Ukrainian is the official language.
In the ten years after the opening of the Trans-Siberian Railway in 1906, an additional 1.6 million Ukrainians emigrated to the east.
In 1917, following the Russian Revolution, the short-lived Ukrainian People's Republic was formed as Ukrainian nationalism developed.
Fighting on Ukrainian soil, which began with World War I, persisted until late 1921.
In 1921, famine further hit the eastern provinces of Ukraine.
In July 1922, arrests and deportations of Ukrainian intellectuals began in Soviet Ukraine and continued throughout the 1920s.
In 1922, the Bolsheviks consolidated control over much of the former Russian Empire and established the Ukrainian Soviet Socialist Republic, which became a constituent republic of the Soviet Union.
In 1932, Stalin established socialist realism as state policy in the Soviet Union, as per the decree "On the Reconstruction of Literary and Art Organisations", which heavily restricted creativity.
After Józef Piłsudski's death in 1935, efforts to offer local autonomy to Ukrainians were abandoned due to continued unrest.
Following the Invasion of Poland in September 1939, German and Soviet troops divided the territory of Poland. Eastern Galicia and Volhynia became part of Ukraine.
In 1940, further territorial gains were secured when the Ukrainian SSR incorporated districts from Bessarabia, Northern Bukovina, and the Hertsa region.
On 22 June 1941, German armies invaded the Soviet Union, initiating nearly four years of total war.
In 1942, the independent Ukrainian Insurgent Army movement arose in Western Ukraine as the armed forces of the underground Organisation of Ukrainian Nationalists.
From mid-1943 until the end of the war, the UPA carried out massacres of ethnic Poles in the Volhynia and Eastern Galicia regions.
In 1944, half of the Pro-Soviet partisan guerrilla resistance units, which counted up to 500,000 troops, were also Ukrainian.
In 1945, Soviet Ukraine joined the United Nations as one of the original members.
In 1945, the Ukrainian SSR became one of the founding members of the United Nations.
The situation in Ukraine was worsened by a famine in 1946–1947, which was caused by a drought and the wartime destruction of infrastructure.
In 1947, the territorial gains of the USSR, including those affecting Ukraine, were internationally recognised by the Paris peace treaties.
The situation in Ukraine was worsened by a famine in 1946–1947, which was caused by a drought and the wartime destruction of infrastructure.
By 1950, the republic had fully surpassed pre-war levels of industry and production.
As of 1 January 1953, Ukrainians were second only to Russians among adult "special deportees", comprising 20% of the total.
Following the death of Stalin in 1953, Nikita Khrushchev became the new leader of the USSR, who began the policies of de-stalinisation and the Khrushchev Thaw.
In 1964, Leonid Brezhnev became General Secretary of the Communist Party of the Soviet Union.
Leonid Brezhnev's term as General Secretary of the Communist Party of the Soviet Union ended in 1982.
On 26 April 1986, a reactor in the Chernobyl Nuclear Power Plant exploded, resulting in the Chernobyl disaster.
In 1986, the accident at the Chernobyl Nuclear Power Plant caused radiation contamination in the northeast of Ukraine.
By 1988, the number of higher education institutions in Ukraine increased to 146, accommodating over 850,000 students.
On 16 July 1990, the Supreme Soviet of the Ukrainian Soviet Socialist Republic adopted the Declaration of State Sovereignty of Ukraine.
On 24 August 1991, outright independence was proclaimed in Ukraine following a failed coup in Moscow.
In 1991, Ukraine gained independence as the Soviet Union dissolved and declared itself neutral.
In 1991, Ukraine transitioned to a market economy, which led to a deep economic slowdown. During the recession between 1991 and 1999, Ukraine lost 60% of its GDP.
Literary freedom grew alongside the reestablishment of Ukrainian independence in 1991.
Since Ukraine's declaration of independence in 1991, the usage of "the Ukraine" has become politicised and is now rarer, with style guides advising against its use.
The judicial system is considered to have been much improved since Ukraine's independence in 1991.
In 1992, Ukraine joined the Conference on Security and Cooperation in Europe (now OSCE) and the North Atlantic Cooperation Council.
In 1992, Ukraine signed the Lisbon Protocol agreeing to give up all nuclear weapons to Russia.
Ukraine has made contributions to UN peacekeeping operations since 1992.
In 1993, Ukraine experienced hyperinflation that peaked at 10,000%.
Sergey Bubka held the record in the Pole vault starting in 1993 until 2014.
In 1994, Ukraine established a partnership with NATO following its declaration of neutrality after independence.
In 1994, Ukraine signed the Budapest memorandum, agreeing to hand over nuclear weapons in exchange for security guarantees, but Russia later violated this agreement.
On 28 June 1996, the Constitution of Ukraine was adopted and ratified.
By 1996, Ukraine had become free of nuclear weapons.
In 1996, a new constitution was adopted in Ukraine as the country transitioned to a free market liberal democracy.
In 1998, the European Union's Partnership and Cooperation Agreement (PCA) with Ukraine went into force.
In late 1998, the new currency, the hryvnia, fell sharply, partially due to the Russian debt default that year.
The EU Summit in December 1999 in Helsinki recognized Ukraine's long-term aspirations but did not discuss association.
From 1999 to 2001, Ukraine served as a non-permanent member of the UN Security Council.
In 2000, the museum of Pysanka was built in the city of Kolomyia, near the foothills of the Carpathian Mountains.
According to the 2001 census, ethnic Ukrainians made up roughly 78% of the population, while Russians were the largest minority, at some 17.3% of the population.
From 1999 to 2001, Ukraine served as a non-permanent member of the UN Security Council.
Courts enjoy legal, financial and constitutional freedom guaranteed by Ukrainian law since 2002.
In 2002, the NATO-Ukraine Action Plan was signed, setting deeper cooperation between Ukraine and the alliance.
From 2003 to 2005, a Ukrainian unit was deployed as part of the multinational force in Iraq under Polish command.
In 2004, the Orange Revolution occurred as tens of thousands of people protested election rigging in favor of Yanukovych.
Law enforcement agencies, particularly the police, faced criticism for their heavy handling of the 2004 Orange Revolution.
From 2003 to 2005, a Ukrainian unit was deployed as part of the multinational force in Iraq under Polish command.
Since 2005, an eleven-year school programme has been replaced with a twelve-year one.
The Orange Revolution which started in 2004, continued into 2005, ushering electoral and constitutional reforms.
In 2007, the museum of Pysanka won a nomination as the monument of modern Ukraine, part of the Seven Wonders of Ukraine action.
During the 2008 Bucharest summit, NATO declared that Ukraine would eventually become a member of NATO when it meets the criteria for accession.
Vasyl Lomachenko won an Olympic gold medal in 2008.
In 2010, President Yanukovych formed an expert group to make recommendations on court organisation reform.
Since 2010, court proceedings can be held in Russian by mutual consent of the parties.
In 2011, Ukraine was granted the right to organise EuroBasket 2015.
Effective in August 2012, a new law on regional languages entitled any local language spoken by at least a 10 percent minority be declared official within that area.
Since 2012, the Ministry of Culture of Ukraine has formed the National Inventory of Elements of the Intangible Cultural Heritage of Ukraine.
Vasyl Lomachenko won an Olympic gold medal in 2012.
In 2013 the Ukraine national basketball team finished sixth in EuroBasket and qualified to FIBA World Cup for the first time in its history.
By the end of the protests on 21 February 2014, President Yanukovych fled Ukraine and was removed by the parliament, in what is termed the Revolution of Dignity.
In late February and early March 2014, Russia annexed Crimea using its Navy in Sevastopol and "little green men".
Shortly after Yanukovych fled Ukraine, the country signed the EU association agreement in June 2014.
On 24 August 2014, Russian forces started an open invasion in Donbas, pushing back Ukrainian troops.
From 1993 to 2014, Ukraine's total population decreased by 6.6 million, or 12.8%, due to various factors including a higher death rate than birth rate and mass emigration.
In 2014, following the Revolution of Dignity, the Ukrainian Parliament voted to repeal the law on regional languages, making Ukrainian the sole state language.
In 2014, mass demonstrations known as the Euromaidan led to a revolution in Ukraine, at the end of which Russia unilaterally occupied and annexed Ukraine's Crimean Peninsula, and pro-Russian unrest culminated in a war in Donbas with Russian-backed separatists and Russia.
In 2014, the Russian Federation annexed Sevastopol and the Autonomous Republic of Crimea from Ukraine, which are part of Ukraine's 27 regions.
In 2014, the Ukrainian frigate Hetman Sagaidachniy joined the European Union's counter piracy Operation Atalanta.
In 2014, the beginning of the Russo-Ukrainian War led to modernisation of the Ukrainian military, including allowing junior officers more initiative and establishing a territorial defense force.
Sergey Bubka's record in the Pole vault ended in 2014; he held the record starting in 1993.
The Association Agreement between Ukraine and the European Union was signed in 2014.
Tourism was the mainstay of Crimea's economy before a major fall in visitor numbers following the Russian annexation in 2014.
In February 2015, a frontline was established in Donbas after Ukrainian troops withdrew from Debaltseve.
Since 2015, Ukraine's energy policy has prioritized diversifying energy supply.
Ukraine was granted the right to organise EuroBasket 2015, granted in 2011.
In January 2016, the Deep and Comprehensive Free Trade Area (DCFTA) entered into force, integrating Ukraine into the European Single Market.
In 2016, Protestants made up 1.9% of the population.
Ukraine's 2017 education law bars primary education in public schools in grade five and up in any language but Ukrainian.
As of September 2018, Vasyl Lomachenko is ranked as the world's best active boxer, pound for pound, by ESPN.
In 2018, Protestants rose to 2.2% of the population.
In January 2019, the Orthodox Church of Ukraine was recognized as independent of Moscow.
On 7 February 2019, the Verkhovna Rada voted to amend the constitution to state Ukraine's strategic objectives as joining the European Union and NATO.
In 2019, 82% of Ukrainians were Christians; out of which 72.7% declared themselves to be Eastern Orthodox, 8.8% Ukrainian Greek Catholics, 2.3% Protestants and 0.9% Latin Church Catholics.
In 2019, about 1% of Ukrainians lived below the national poverty line, and unemployment in Ukraine was 4.5%. Also, 5–15% of the Ukrainian population were categorized as middle class.
In 2019, fossil fuel subsidies in Ukraine amounted to US$2.2 billion.
In 2019, the law allowing for official use of regional languages was found unconstitutional.
In 2020, Lithuania, Poland and Ukraine created the Lublin Triangle initiative.
In 2020, Ukraine's government debt was roughly 50% of its nominal GDP.
In 2020, the COVID-19 pandemic arrived in Ukraine, with efforts to combat it made much harder by low vaccination rates and, later, by the ongoing invasion.
In 2020/21 Ukraine accounted for 12 percent of global trade in maize and barley and for 14 percent of world rapeseed exports. Its trade share is even greater in the sunflower oil sector, with the country accounting for about 50 percent of world exports in 2020/2021.
A 2021 survey conducted by the Kyiv International Institute of Sociology (KIIS) found that 82% of Ukrainians declared themselves to be religious.
During the 2020/21 international wheat marketing season (July–June), Ukraine ranked as the sixth largest wheat exporter, accounting for nine percent of world wheat trade.
In 2021, agriculture was the biggest sector of the economy in Ukraine, making it one of the world's largest wheat exporters.
In 2021, mineral commodities and light industry were important sectors of Ukraine's economy, with the European Union as the country's main trade partner.
In 2021, the Association Trio was formed by Georgia, Moldova, and Ukraine to enhance cooperation with the EU.
In 2021, the IT industry contributed almost 5 per cent to Ukraine's GDP.
In 2021, the average salary in Ukraine reached its highest level at almost ₴14,300 (US$525) per month.
Between February 2022 and March 2023, UNESCO verified the damage to 247 sites in Ukraine.
In February 2022, when Russia invaded, martial law was declared in Ukraine.
In the early hours of 24 February 2022, Russia invaded Ukraine.
On 24 February 2022, Russia launched a full-scale invasion of Ukraine, leading to economic disruption and hindering efforts to combat the COVID-19 pandemic.
In June 2022, Ukraine was granted candidate status to the European Union.
On 23 June 2022, amid a full-scale war with Russia, Ukraine was granted candidate status to the European Union.
As of 2022, 75% of the Ukrainian population uses the internet, and social media is widely used by government and people.
Before the 2022 Russian invasion of Ukraine, the country had an estimated population of over 41 million people and was the eighth-most populous country in Europe.
During the 2022 Russian invasion of Ukraine, Russian forces bombed several libraries, including the Maksymovych Scientific Library, Vernadsky National Library, the National Scientific Medical Library of Ukraine and the Kyiv city youth library.
During the first few weeks of the 2022 Russian invasion, the Ukrainian military struggled against heavy shelling and bombing, but light infantry effectively used shoulder-mounted weapons.
In 2022, some energy infrastructure was destroyed in the Russian invasion of Ukraine.
In 2022, the IMF expected the Ukrainian economy to shrink by 35% due to Russia's invasion, with potential post-war reconstruction costs estimated at half a trillion dollars.
In 2022, the IT industry continued both inside and outside the country during the Russian invasion of Ukraine.
In 2022, the Russian invasion of Ukraine led to the destruction of roads and bridges, and blocked international maritime travel, which was mainly through the Port of Odesa.
In early 2022, the Russian invasion of Ukraine led to the Ukrainian refugee crisis, with over 4.1 million fleeing the country.
Since 2022, grain produce in Ukraine has been reduced due to the Russian invasion, endangering global food security.
Since January 2023, the historic centre of Odesa has been inscribed on the List of World Heritage in Danger.
Between February 2022 and March 2023, UNESCO verified the damage to 247 sites in Ukraine, including religious sites, artistic buildings, monuments, and libraries.
In August 2023, U.S. officials estimated that up to 70,000 Ukrainian soldiers were killed and 100,000 to 120,000 wounded during the Russian invasion of Ukraine.
In 2023, Ukraine was rated 104th out of 180 in the Corruption Perceptions Index, indicating corruption remains an obstacle to joining the EU.
On 10 March 2024, creators of the documentary film "20 Days in Mariupol" were awarded the Oscar in the category "Best Documentary Feature Film", marking the first Oscar in Ukraine's history.
As of July 2024, the National Inventory of Elements of the Intangible Cultural Heritage of Ukraine consists of 103 items.
As of 2024, Ukraine has the lowest nominal GDP per capita in Europe.
In 2024, Ukraine was ranked 60th in the Global Innovation Index.
In 2024, the Ukrainian government estimates that the population in the regions controlled by Ukraine was 25 to 27 million.
The contract to transit Russian gas expires at the end of 2024.