paragraph_text: The Roman Empire was among the most powerful economic, cultural, political and military forces in the world of its time. It was one of the largest empires in world history. At its height under Trajan, it covered 5 million square kilometres. It held sway over an estimated 70 million people, at that time 21% of the world's entire population. The longevity and vast extent of the empire ensured the lasting influence of Latin and Greek language, culture, religion, inventions, architecture, philosophy, law and forms of government on the empire's descendants. Throughout the European medieval period, attempts were even made to establish successors to the Roman Empire, including the Empire of Romania, a Crusader state; and the Holy Roman Empire. By means of European colonialism following the Renaissance, and their descendant states, Greco - Roman and Judaeo - Christian culture was exported on a worldwide scale, playing a crucial role in the development of the modern world.

paragraph_text: Slavery in Florida began under Spanish rule and continued under American and later Confederate rule. It was theoretically abolished by President Lincoln's Emancipation Proclamation of January 1, 1863, but this had little effect in Florida. Slavery continued until the end of the Civil War and collapse of the Confederacy in the spring of 1865, followed by the ratification of the Thirteenth Amendment in December 1865. Some of the characteristics of slavery -- inability to leave a disagreeable situation -- continued under sharecropping, convict leasing, vagrancy laws. In the 20th and 21st centuries, conditions approximating slavery are found among marginal immigrant populations, especially migrant farm workers and involuntary sex workers.

paragraph_text: The first European to colonize what is now the Federative Republic of Brazil on the continent of South America was Pedro Álvares Cabral (c. 1467 / 1468 - c. 1520) on April 22, 1500 under the sponsorship of the Kingdom of Portugal. From the 16th to the early 19th century, Brazil was a colony and a part of the Portuguese Empire. The country expanded south along the coast and west along the Amazon and other inland rivers from the original 15 donatary captaincy colonies established on the northeast Atlantic coast east of the Tordesillas Line of 1494 (approximately the 46th meridian west) that divided the Portuguese domain to the east from the Spanish domain to the west. The country's borders were only finalized in the early 20th century.

paragraph_text: Though the amendment formally abolished slavery throughout the United States, factors such as Black Codes, white supremacist violence, and selective enforcement of statutes continued to subject some black Americans to involuntary labor, particularly in the South. In contrast to the other Reconstruction Amendments, the Thirteenth Amendment was rarely cited in later case law, but has been used to strike down peonage and some race - based discrimination as ``badges and incidents of slavery ''. The Thirteenth Amendment applies to the actions of private citizens, while the Fourteenth and Fifteenth Amendments apply only to state actors. The amendment also enables Congress to pass laws against sex trafficking and other modern forms of slavery.

paragraph_text: Macau was administered by the Portuguese Empire and its inheritor states from the mid-16th century until late 1999, when it constituted the last remaining European colony in Asia. Portuguese traders first settled in Macau in the 1550s. In 1557, Macau was leased to Portugal from Ming China as a trading port. The Portuguese Empire administered the city under Chinese authority and sovereignty until 1887, when Macau became a colony through a mutual agreement between the two countries. Sovereignty over Macau was transferred back to China on 20 December 1999. The Joint Declaration on the Question of Macau and Macau Basic Law stipulate that Macau operate with a high degree of autonomy until at least 2049, fifty years after the transfer.

paragraph_text: Imperialism has played an important role in the histories of Japan, Korea, the Assyrian Empire, the Chinese Empire, the Roman Empire, Greece, the Byzantine Empire, the Persian Empire, the Ottoman Empire, Ancient Egypt, the British Empire, India, and many other empires. Imperialism was a basic component to the conquests of Genghis Khan during the Mongol Empire, and of other war-lords. Historically recognized Muslim empires number in the dozens. Sub-Saharan Africa has also featured dozens of empires that predate the European colonial era, for example the Ethiopian Empire, Oyo Empire, Asante Union, Luba Empire, Lunda Empire, and Mutapa Empire. The Americas during the pre-Columbian era also had large empires such as the Aztec Empire and the Incan Empire.

paragraph_text: The British Empire, consolidated during the period of British maritime hegemony in the 19th century, became the largest empire in history by virtue of the improved transportation technologies of the time. At its height, the British Empire covered a quarter of the Earth's land area and comprised a quarter of its population. During the New Imperialism, Italy and Germany also built their colonial empires in Africa.

paragraph_text: Following the defeat of the Boers in the Anglo - Boer or South African War (1899 -- 1902), the Union of South Africa was created as a dominion of the British Empire in terms of the South Africa Act 1909, which amalgamated the four previously separate British colonies: Cape Colony, Natal Colony, Transvaal Colony, and Orange River Colony. The country became a self - governing nation state within the British Empire, in 1934 following enactment of the Status of the Union Act. The dominion came to an end on 31 May 1961 as the consequence of a 1960 referendum, which legitimised the country becoming a sovereign state named Republic of South Africa. A republican constitution was adopted.

paragraph_text: The concept has its roots in the 1807 Abolition of Slavery Act of Great Britain. Many academics in the field perceive this as the beginning of the end of the traditional form of slavery: chattel slavery. In the 19th century, Britain controlled the majority of the world through its colonies. Consequently, in passing this law to abolish slavery, the British Parliament abolished slavery in the vast majority of its colonies.

paragraph_text: During the Age of Discovery in the 15th and 16th centuries, Portugal and Spain pioneered European exploration of the globe, and in the process established large overseas empires. Envious of the great wealth these empires generated, England, France, and the Netherlands began to establish colonies and trade networks of their own in the Americas and Asia. A series of wars in the 17th and 18th centuries with the Netherlands and France left England (and then, following union between England and Scotland in 1707, Great Britain) the dominant colonial power in North America and India.

paragraph_text: This in turn led to the establishment of the right-wing dictatorship of the Estado Novo under António de Oliveira Salazar in 1933. Portugal was one of only five European countries to remain neutral in World War II. From the 1940s to the 1960s, Portugal was a founding member of NATO, OECD and the European Free Trade Association (EFTA). Gradually, new economic development projects and relocation of mainland Portuguese citizens into the overseas provinces in Africa were initiated, with Angola and Mozambique, as the largest and richest overseas territories, being the main targets of those initiatives. These actions were used to affirm Portugal's status as a transcontinental nation and not as a colonial empire.

paragraph_text: The British colonization of the Americas (including colonization by both the English and the Scots) began in 1607 in Jamestown, Virginia, and reached its peak when colonies had been established throughout the Americas. The English, and later the British, were among the most important colonizers of the Americas, and their American empire came to rival the Spanish American colonies in military and economic might.

paragraph_text: The brief peace in Europe allowed Napoleon to focus on the French colonies abroad. Saint-Domingue had managed to acquire a high level of political autonomy during the Revolutionary Wars, with Toussaint Louverture installing himself as de facto dictator by 1801. Napoleon saw his chance to recuperate the formerly wealthy colony when he signed the Treaty of Amiens. During the Revolution, the National Convention voted to abolish slavery in February 1794. Under the terms of Amiens, however, Napoleon agreed to appease British demands by not abolishing slavery in any colonies where the 1794 decree had never been implemented. The resulting Law of 20 May never applied to colonies like Guadeloupe or Guyane, even though rogue generals and other officials used the pretext of peace as an opportunity to reinstate slavery in some of these places. The Law of 20 May officially restored the slave trade to the Caribbean colonies, not slavery itself. Napoleon sent an expedition under General Leclerc designed to reassert control over Sainte-Domingue. Although the French managed to capture Toussaint Louverture, the expedition failed when high rates of disease crippled the French army. In May 1803, the last 8000 French troops left the island and the slaves proclaimed an independent republic that they called Haïti in 1804. Seeing the failure of his colonial efforts, Napoleon decided in 1803 to sell the Louisiana Territory to the United States, instantly doubling the size of the U.S. The selling price in the Louisiana Purchase was less than three cents per acre, a total of $15 million.

paragraph_text: Following the defeat of the Boers in the Anglo - Boer or South African War (1899 -- 1902), the Union of South Africa was created as a dominion of the British Empire in terms of the South Africa Act 1909, which amalgamated the four previously separate British colonies: Cape Colony, Natal Colony, Transvaal Colony and Orange River Colony. The country became a self - governing nation state within the British Empire, in 1934 following enactment of the Status of the Union Act. The dominion came to an end on 31 May 1961 as the consequence of a 1960 referendum, which legitimised the country becoming a sovereign state named Republic of South Africa. A republican constitution was adopted.

paragraph_text: The Monroe Doctrine was a United States policy of opposing European colonialism in the Americas beginning in 1823. It stated that further efforts by European nations to take control of any independent state in North or South America would be viewed as ``the manifestation of an unfriendly disposition toward the United States. ''At the same time, the doctrine noted that the U.S. would recognize and not interfere with existing European colonies nor meddle in the internal concerns of European countries. The Doctrine was issued on December 2, 1823 at a time when nearly all Latin American colonies of Spain and Portugal had achieved, or were at the point of gaining, independence from the Portuguese and Spanish Empires.

paragraph_text: The Slave Trade Act 1807, officially An Act for the Abolition of the Slave Trade, was an Act of the Parliament of the United Kingdom prohibiting the slave trade in the British Empire. Although it did not abolish the practice of slavery, it did encourage British action to press other nations states to abolish their own slave trades.

paragraph_text: West Virginia became the 35th state on June 20, 1863, and the last slave state admitted to the Union. Eighteen months later, the West Virginia legislature completely abolished slavery, and also ratified the 13th Amendment on February 3, 1865.

paragraph_text: With support from the British abolitionist movement, Parliament enacted the Slave Trade Act in 1807, which abolished the slave trade in the empire. In 1808, Sierra Leone was designated an official British colony for freed slaves. The Slavery Abolition Act passed in 1833 abolished slavery in the British Empire on 1 August 1834 (with the exception of St. Helena, Ceylon and the territories administered by the East India Company, though these exclusions were later repealed). Under the Act, slaves were granted full emancipation after a period of 4 to 6 years of "apprenticeship".

paragraph_text: European overseas expansion led to the rise of colonial empires, producing the Columbian Exchange. The combination of resource inflows from the New World and the Industrial Revolution of Great Britain, allowed a new economy based on manufacturing instead of subsistence agriculture.

paragraph_text: Vilnius County () is the largest of the 10 counties of Lithuania, located in the east of the country around the city Vilnius. On 1 July 2010, the county administration was abolished, and since that date, Vilnius County remains as the territorial and statistical unit.

Question: What abolished slavery throughout the European country with the largest colonial empire?
Answer: The Slavery Abolition Act