title: Nigeria
paragraph_text: Nigeria gained independence from the United Kingdom as a Commonwealth Realm on 1 October 1960. Nigeria's government was a coalition of conservative parties: the Nigerian People's Congress (NPC), a party dominated by Northerners and those of the Islamic faith, and the Igbo and Christian-dominated National Council of Nigeria and the Cameroons (NCNC) led by Nnamdi Azikiwe. Azikiwe became Nigeria's maiden Governor-General in 1960. The opposition comprised the comparatively liberal Action Group (AG), which was largely dominated by the Yoruba and led by Obafemi Awolowo. The cultural and political differences between Nigeria's dominant ethnic groups – the Hausa ('Northerners'), Igbo ('Easterners') and Yoruba ('Westerners') – were sharp.
title: Rollo Graham Campbell
paragraph_text: The Rt Revd Archibald Rollo Graham Campbell CBE (18 February 1903 - 11 April 1978) was an Anglican Bishop in the mid 20th century.
title: The Travelling Players
paragraph_text: The Travelling Players (, translit. O Thiassos) is a 1975 Greek film directed by Theodoros Angelopoulos that traces the history of mid-20th-century Greece from 1939 to 1952.
title: Philadelphia
paragraph_text: From the American Civil War until the mid-20th century, Philadelphia was a bastion of the Republican Party, which arose from the staunch pro-Northern views of Philadelphia residents during and after the war (Philadelphia was chosen as the host city for the first Republican National Convention in 1856). After the Great Depression, Democratic registrations increased, but the city was not carried by Democrat Franklin D. Roosevelt in his landslide victory of 1932 (in which Pennsylvania was one of the few states won by Republican Herbert Hoover). Four years later, however, voter turnout surged and the city finally flipped to the Democrats. Roosevelt carried Philadelphia with over 60% of the vote in 1936. The city has remained loyally Democratic in every presidential election since. It is now one of the most Democratic in the country; in 2008, Democrat Barack Obama drew 83% of the city's vote. Obama's win was even greater in 2012, capturing 85% of the vote.
title: Jeffersonian democracy
paragraph_text: Jeffersonian democracy, named after its advocate Thomas Jefferson, was one of two dominant political outlooks and movements in the United States from the 1790s to the 1820s. The term was commonly used to refer to the Democratic - Republican Party (formally named the ``Republican Party ''), which Jefferson founded in opposition to the Federalist Party of Alexander Hamilton. The Jeffersonians were deeply committed to American republicanism, which meant opposition to aristocracy of any form, opposition to corruption, and insistence on virtue, with a priority for the`` yeoman farmer'', ``planters '', and the`` plain folk''.
title: House of Commons of Canada
paragraph_text: House of Commons of Canada Chambre des communes du Canada 42nd Parliament Type Type Lower House of the Parliament of Canada Leadership Speaker Geoff Regan, Liberal Since December 3, 2015 Prime Minister Justin Trudeau, Liberal Since November 4, 2015 Leader of the Official Opposition Andrew Scheer, Conservative Since May 27, 2017 Leader of the Government in the House of Commons Bardish Chagger, Liberal Since August 19, 2016 Opposition House Leader Candice Bergen, Conservative Since September 15, 2016 Structure Seats 338 Political groups HM Government Liberal Party (183) HM Loyal Opposition Conservative Party (97) Other Parties New Democratic Party (44) Bloc Québécois (10) Green Party (1) Independent (2) Vacant (1) Salary C $172,700 (sessional indemnity effective April 1, 2017) Elections Voting system First - past - the - post Last election October 19, 2015 Next election Scheduled for October 21, 2019 Meeting place Centre Block -- Parliament Hill Ottawa Website www.ourcommons.ca
title: Plastic
paragraph_text: The success and dominance of plastics starting in the early 20th century led to environmental concerns regarding its slow decomposition rate after being discarded as trash due to its composition of large molecules. Toward the end of the century, one approach to this problem was met with wide efforts toward recycling.
title: Coonamessett Airport
paragraph_text: Coonamessett Airport was an airfield operational in the mid-20th century in Hatchville, Massachusetts. It is now part of the Pheasant Area at the Frances A. Crane Wildlife Management Area.
title: African-American candidates for President of the United States
paragraph_text: Major party, African American candidates for President of the United States could not run in primaries until nearly the third quarter of the 20th century, after the passage of the Civil Rights Act (1964) and Voting Rights Act (1965) opened up political participation to blacks in the South. Also, party changes to give more weight to candidates' performance in primaries, rather than to party leaders' negotiation in secret, opened up the fields. In 2008, Senator Barack Obama was elected the 44th president of the United States, the first African American to win the office.
title: Naranjan Singh Bhalla
paragraph_text: Naranjan Singh Bhalla popularly known as Bhalla Sahib (died 1996) was a 20th-century Sikh leader from Jammu and Kashmir, the northernmost state of India.
title: Anthony Eden
paragraph_text: After the Labour Party won the 1945 election, Eden went into opposition as Deputy Leader of the Conservative Party. Many felt that Churchill should have retired and allowed Eden to become party leader, but Churchill refused to consider this. As early as the spring of 1946, Eden openly asked Churchill to retire in his favour. He was in any case depressed during this period by the break-up of his first marriage and the death of his eldest son. Churchill was in many ways only "part-time Leader of the Opposition", given his many journeys abroad and his literary work, and left the day-to-day work largely to Eden. Eden was largely regarded as lacking sense of party politics and contact with the common man. In these opposition years, however, he developed some knowledge about domestic affairs and created the idea of a "property-owning-democracy", which Margaret Thatcher's government attempted to achieve decades later. His domestic agenda is overall considered centre-left.
title: Party leaders of the United States House of Representatives
paragraph_text: The current Minority Leader Nancy Pelosi, of the United States House of Representatives serves as floor leader of the opposition party, and is the counterpart to the Majority Leader. Unlike the Majority Leader, the Minority Leader is on the ballot for Speaker of the House during the convening of the Congress. If the Minority Leader's party takes control of the House, and the party officers are all re-elected to their seats, the Minority Leader is usually the party's top choice for Speaker for the next Congress, while the Minority Whip is typically in line to become Majority Leader. The Minority Leader usually meets with the Majority Leader and the Speaker to discuss agreements on controversial issues.
title: Politics of Japan
paragraph_text: Several political parties exist in Japan, however, the politics of Japan have primarily been dominated by the LDP since 1955, with the DPJ playing an important role as opposition several times. LDP was a ruling party during decades since 1955. Despite of existence of multiple parties, other parties were completely ignored. Most of the prime ministers were elected from inner factions of LDP.
title: Politics of Texas
paragraph_text: From 1848 until Richard M. Nixon's victory in 1972, Texas voted for the Democratic candidate for president in every election except 1928, when it did not support Catholic Al Smith. The state had a white majority and Democrats re-established their dominance after the Civil War. In the mid-20th century 1952 and 1956 elections, the state voters joined the landslide for Dwight D. Eisenhower. (Texas did not vote in 1864 and 1868 due to the Civil War and Reconstruction).
title: Republican Party (United States)
paragraph_text: Founded in the Northern states in 1854 by anti-slavery activists, modernizers, ex Whigs and ex Free Soilers, the Republican Party quickly became the principal opposition to the dominant Democratic Party and the briefly popular Know Nothing Party. The main cause was opposition to the Kansas -- Nebraska Act, which repealed the Missouri Compromise by which slavery was kept out of Kansas. The Northern Republicans saw the expansion of slavery as a great evil. The first public meeting of the general ``anti-Nebraska ''movement where the name`` Republican'' was suggested for a new anti-slavery party was held on March 20, 1854, in a schoolhouse in Ripon, Wisconsin. The name was partly chosen to pay homage to Thomas Jefferson's Republican Party.
title: Civil rights movement (1896–1954)
paragraph_text: Among the most prominent was Norris Wright Cuney, the Republican Party chairman in late 19th century Texas. These gains led to substantial discomfort among many white voters, who generally supported the Democrats. During the 1888 Texas Republican Convention, Cuney coined the term lily - white movement to describe efforts by white conservatives to oust blacks from positions of party leadership and incite riots to divide the party. Increasingly organized efforts by this movement gradually eliminated black leaders from the party. The writer Michael Fauntroy contends that the effort was coordinated with Democrats as part of a larger movement toward disenfranchisement of blacks in the South at the end of the 19th and beginning of the 20th century by increasing restrictions in voter registration rules.
title: Leader of Opposition (Uganda)
paragraph_text: The Leader of Opposition (LOP) in Uganda is the title bestowed upon the elected leader of the largest political party not within the ruling government. The Leader of Opposition appoints and heads an alternative Shadow Cabinet whose duty is to challenge and influence government legislation on the floor of Parliament The current Leader of Opposition and first Ugandan female to hold the position is Hon. Winnie Kiiza of the Forum for Democratic Change. The Opposition in Uganda is made up of members from Forum for Democratic Change, Democratic Party, Uganda People's Congress, Congress Party and JEEMA.
title: New York City
paragraph_text: Organized crime has long been associated with New York City, beginning with the Forty Thieves and the Roach Guards in the Five Points in the 1820s. The 20th century saw a rise in the Mafia, dominated by the Five Families, as well as in gangs, including the Black Spades. The Mafia presence has declined in the city in the 21st century.
title: Alps
paragraph_text: Important geological concepts were established as naturalists began studying the rock formations of the Alps in the 18th century. In the mid-19th century the now defunct theory of geosynclines was used to explain the presence of "folded" mountain chains but by the mid-20th century the theory of plate tectonics became widely accepted.
title: Rosary
paragraph_text: From the 16th to the early 20th century, the structure of the rosary remained essentially unchanged. There were 15 mysteries, one for each of the 15 decades. During the 20th century, the addition of the Fatima Prayer to the end of each decade became more common. There were no other changes until 2002, when John Paul II instituted five optional new Luminous Mysteries, although variations of these had already been proposed by the likes of St. Louis de Montfort and were implemented during the mid-20th Century by figures such as Patrick Peyton.

Question: Who were the leaders of the opposition of the party that dominated until the mid-20th century?

Question decomposition:
question: What party dominated until the mid-20th century
answer: Republican Party
question: who were the leaders of the opposition #1
answer: anti-slavery activists, modernizers, ex Whigs and ex Free Soilers

Answer: anti-slavery activists, modernizers, ex Whigs and ex Free Soilers