Ukraine came under Russian imperial rule in the late 18th century

Ukrainian nationalism rose under imperial repression

In the 19th century, Ukrainian nationalism took shape through cultural revival movements and intellectual circles—even as the Russian Empire banned the Ukrainian language and sought to suppress Ukrainian identity.

Ukraine's Soviet Republic was tightly bound to Moscow's control

Proclaimed in 1917 and absorbed into the USSR in 1922, the Ukrainian Soviet Socialist Republic was nominally independent yet operated under Moscow's control, with its government and laws directed by the Soviet Communist Party.

The origins of Ukrainian identity are a matter of historical debate

Scholars disagree on when a distinct Ukrainian identity emerged. Some trace it to Kyivan Rus, a medieval East Slavic state centered in Kyiv, while others argue that Ukrainian nationhood developed much later, shaped by centuries of foreign rule and cultural revival movements.

Prehistoric to present day Ukraine

Recognizing the abundance of information available on the current war between Ukraine and Russia, this video focuses on the history of the region. Encapsulating Ukraine's background, the viewer will gain a better grasp of how the modern state arose from a quilt of different ethnicities, noteworthy conflicts between various groups, and more.

Kyivan Rus laid the cultural foundations for Eastern Europe

From the 9th to the 13th centuries, Kyivan Rus was a powerful East Slavic state centered in Kyiv. It shaped the region's language, religion, and political traditions—forming the shared cultural roots of modern-day Ukraine, Russia, and Belarus.

Ukraine became independent after the Soviet Union's collapse

Ukraine declared independence on Aug. 24, 1991, following the dissolution of the Soviet Union. In a national referendum, over 90% of Ukrainians approved independence, establishing a democratic constitution and marking the birth of a modern sovereign state.

Russia controls about 20% of Ukraine's territory

As of February 2026, Russian forces occupy roughly one-fifth of Ukraine, including Crimea and large parts of the Donetsk, Luhansk, Zaporizhzhia, and Kherson regions, with front lines largely unchanged for months.

Russian forces seized Ukraine's Crimean Peninsula in 2014

Days after Ukraine's 2014 revolution, unmarked Russian troops occupied key sites in Crimea, a Black Sea peninsula with a predominantly Russian-speaking population that had been part of Ukraine since 1954.

Modern Ukraine—caught between Europe and Russia

"Ukraine" has been translated by some scholars as meaning "borderlands". Indeed the country lies perfectly between Europe and Russia, while hosting a diverse collection of people of differing languages, cultures, and ethnicities, feeling affinity for those on the other sides of the country's borders. This article explores how this affects the actions and reactions of Ukrainians during the current conflict.

Mapping Russia's historical borders

This interactive map illustrates how the country’s borders have changed over the centuries, dating all the way back to the year 862, when the Varangian king Rurik assumed leadership of Ancient Rus. Scroll down to see how Russia vastly expanded its territory in the 16th and 17th centuries, and skip to 1991 to see which countries gained independence after the fall of the USSR.

The Romanov family ruled Russia for more than 300 years

From 1613 to 1917, 18 Romanovs—including Peter and Catherine the Great—governed the vast Russian Empire. Their dynasty ended abruptly in 1917 when Nicholas II abdicated amid wartime shortages and revolutionary unrest, marking the end of imperial Russia.

Ukraine's pro-Russian President halted an EU deal in 2013, leading to a mass protest movement

In late 2013, President Viktor Yanukovych suspended preparations for a long-negotiated EU association agreement under Russian pressure, signaling a return to Moscow's influence and sparking mass Euromaidan protests across Ukraine.

Putin claimed the invasion of Ukraine was to demilitarize and 'denazify' the country

In a 5,000-word historical treatise he wrote himself, President Vladimir Putin claimed the move was meant to restore Russia's historic lands. Many Western historians and global leaders described these narratives as false pretexts for aggression.

Russia's invasion of Ukraine accelerated fractures in the rules-based international order

This piece examines how the Ukraine conflict intensified underlying divisions in the global order—between Western democracies and the Global South, and between rule-of-law norms and great-power politics.

Ukraine has received over $300B in Western military and financial aid

Although not a member of NATO, Ukraine has received substantial support from Western nations, primarily the United States and the European Union, totaling more than $300B in military, financial, and humanitarian assistance.

Hear how Putin's Soviet childhood shaped his rule

In this podcast, journalist Julia Ioffe traces Putin's worldview to his "dvor"—the rough Soviet courtyards where he learned power, loyalty, and survival. The series shows how these early lessons shape his war in Ukraine.

Soviet control spread across Eastern Europe after WWII

In the late 1940s, the USSR solidified control over Eastern Europe by installing pro-communist regimes in countries like Poland, Hungary and Romania—often through rigged elections and political repression.

The Partitions of Poland led to the erasure of the Polish-Lithuanian Commonwealth

Political instability and foreign interference weakened the Commonwealth, which was eventually divided between Prussia, Austria, and Russia. Poland would not be re-established until after World War I and decades of imperial oppression.

The Russia-Ukraine conflict is the largest ground war in Europe since World War II in casualties, forces mobilized, and displacement of civilians.

Stalin's policies intentionally caused a devastating famine in Ukraine

The Holodomor of 1932-33 was a human-made famine resulting from Stalin's grain requisition policies, killing an estimated 3 million to 4 million Ukrainians—considered by many to be an act of genocide.

What led to the October Revolution?

The 1917 Russian Revolution is actually two separate revolutions. One happened that spring that ended centuries of Tsarist rule and led to the establishment of a provisional government. Another happened that autumn during which the Bolshevik...

A map of the Byzantine Empire

This map, hosted on the World History Encyclopedia, shows the Byzantine Empire in four eras. The area shaded dark purple is the original Eastern Roman Empire. The light purple areas represent the conquests of Justinian. The dark purple line surrounds the middle Byzantine Empire. The hatched area, finally, indicates the small “Latin Empire” established after the Fourth Crusade.

Japan was an empire from 1868 until 1947

The Empire of Japan began on Jan. 3, 1868, and facilitated rapid modernization. It endured through a period of colonial expansion—including Korea and Taiwan—1930s militarism, and participation in WWII, until Japan’s formal transformation into a constitutional state under the 1947 constitution following Allied occupation.

British rule in India wasn’t deliberate—it developed from trade

This academic explainer shows how Britain’s rule in India evolved from unplanned trading footholds to complete imperial control. It examines the decline of the Mughal Empire, economic expansion, racism, rebellion, and the mixed legacy of institutions and exploitation that still shape India today.

US–Soviet hostility began long before the Cold War

US–Soviet tensions began decades before WWII. After the 1917 revolution, the US refused to recognize the Bolshevik regime and even sent troops to fight against it.

A timeline of US immigration laws

The United States began regulating immigration soon after it won independence from Great Britain, and the laws since enacted have reflected the politics and migrant flows of the times. Here's a timeline of key immigration laws from 1790 to 2014, according to the Pew Research Center.

The United States is one of only around two dozen countries with a fully federal system of government, in which power is divided between national and state governments.

The United States has had a tumultuous relationship with Cuba since its 1959 revolution, highlighted by a nuclear crisis and a decades-long trade embargo.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

Volcanic activity may have triggered the Black Death by spewing gases that led to crop failures in Europe, thus forcing the import of grain ships with plague-infested fleas.

Trace how the Bill of Rights, inspired by centuries of political theory, took shape between 1774 and 1789.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

The 19th-century painters of the Hudson River School were among the first American romantics, with portraits that displayed the natural beauty of the young country.

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

Most of the observable universe's volume consists of voids and supervoids—enormous regions of space with little to no galaxies, stars, or light.

Famed poet TS Eliot rejected the manuscript for George Orwell's political fable 'Animal Farm,' writing that its criticism of authoritarianism was not 'the right point of view.'

Ebola species have historically been named after where they were discovered, stigmatizing residents who live there, including Bundibugyo, in Uganda.

Watch contemporary footage covering the US-backed Shah of Iran fleeing the country in the face of the 1979 Iranian Revolution

In 2026, Finland was named the world's happiest country for the ninth consecutive year based on its wealth, social safety network, and high life expectancy, among other factors.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

The first line of 'immortal' human cells, which can divide indefinitely and are used in scientific research, was nonconsensually taken from a Black woman.

Poison ivy's characteristic rash is caused by an allergic response to an oily compound in the plant called urushiol.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

Abraham Lincoln was almost assassinated weeks before his inauguration as he traveled from Illinois to DC through Baltimore in 1861; it took two independent claims for Lincoln to be convinced the threat was real

See photos of Meteora, a mountainous site in central Greece, home to 14th-century monasteries perched atop soaring outcroppings.

The hormonal disorder PCOS was renamed PMOS in 2026, a move designed to improve care and research by shifting the focus to the hormonal causes of this condition that affects 1 in 8 women.

The Great Salt Lake's distinct dual coloration results from high-salinity organisms that only live in the northern portion and produce a purple protein.

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.