Question: "A More Perfect Union" is the name of a speech delivered by then Senator and future President Barack Obama on which date, Obama was responding to a spike in the attention paid to controversial remarks made by the Reverend Jeremiah Wright, his former pastor and, until shortly before the speech, a participant in his campaign?

full_context: Document 1: Jeremiah Wright: Jeremiah Alvesta Wright Jr. (called Jerry; born September 22, 1941) is a pastor emeritus of Trinity United Church of Christ in Chicago, with a congregation exceeding 6,000. In early 2008, Wright retired after 36 years as the Senior Pastor and no longer has daily responsibilities at the church. Following retirement, Wright's beliefs and preaching were scrutinized when segments of his sermons were publicized in connection with the presidential campaign of Barack Obama. Obama addressed the issues raised by the Wright controversy in his speech entitled "A More Perfect Union".
Document 2: Barack Obama: Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th President of the United States from 2009 to 2017. He is the first African American to have served as president. He previously served in the U.S. Senate representing Illinois from 2005 to 2008 and in the Illinois State Senate from 1997 to 2004.
Document 3: 2008 Democratic National Convention: The United States 2008 Democratic National Convention was a quadrennial presidential nominating convention of the Democratic Party where it adopted its national platform and officially nominated its candidates for President and Vice President. The convention was held in Denver, Colorado, from August 25 to August 28, 2008, at Pepsi Center. Senator Barack Obama from Illinois gave his acceptance speech on August 28 at Invesco Field in what the party called an "Open Convention". Denver last hosted the Democratic National Convention in 1908. Obama became the party's first African-American nominee for President. Senator Joe Biden from Delaware was nominated for Vice President.
Document 4: Harris Wofford: Harris Llewellyn Wofford Jr. (born April 9, 1926) is an American attorney and Democratic Party politician who represented Pennsylvania in the United States Senate from 1991 to 1995. A noted advocate of national service and volunteering, Wofford was also the fifth president of Bryn Mawr College from 1970 to 1978, served as Chairman of the Pennsylvania Democratic Party in 1986, as Pennsylvania Secretary of Labor and Industry in the cabinet of Governor Robert P. Casey from 1987 to 1991 and was a surrogate for Barack Obama's 2008 presidential campaign. He introduced Obama in Philadelphia at the National Constitution Center before Obama's speech on race in America, "A More Perfect Union".
Document 5: Mel Lawrenz: Mel Lawrenz is the former senior pastor and current Minister-at-Large of Elmbrook Church in Brookfield, Wisconsin. He began serving at Elmbrook in 1980 and the church currently averages 6,000 people in attendance per week, making it one of the 100-largest churches in the United States Lawrenz became the senior pastor of Elmbrook in 2000 after serving under former senior pastor Stuart Briscoe's leadership for twenty years and resigned in 2010.
Document 6: Barack Obama presidential campaign, 2008: The 2008 presidential campaign of Barack Obama, then junior United States Senator from Illinois, was announced on February 10, 2007 in Springfield, Illinois. After winning a majority of delegates in the Democratic primaries of 2008, on August 23, leading up to the convention, the campaign announced that Senator Joe Biden of Delaware would be the Vice Presidential nominee. At the 2008 Democratic National Convention on August 27, Barack Obama was formally selected as the Democratic Party nominee for President of the United States in 2008. He was the first African American in history to be nominated on a major party ticket.
Document 7: Al Sharpton: Alfred Charles Sharpton Jr. (born October 3, 1954) is an American civil rights activist, Baptist minister, television/radio talk show host and a former White House adviser who, according to "60 Minutes", became President Barack Obama's "go-to black leader." In 2004, he was a candidate for the Democratic nomination for the U.S. presidential election. He hosts his own radio talk show, "Keepin' It Real", and he makes regular guest appearances on Fox News (such as on "The O'Reilly Factor"), CNN, and MSNBC. In 2011, he was named the host of MSNBC's "PoliticsNation", a nightly talk show. In 2015, the program was shifted to Sunday mornings.
Document 8: A More Perfect Union (speech): "A More Perfect Union" is the name of a speech delivered by then Senator and future President Barack Obama on March 18, 2008 in the course of the contest for the 2008 Democratic Party presidential nomination. Speaking before an audience at the National Constitution Center in Philadelphia, Pennsylvania, Obama was responding to a spike in the attention paid to controversial remarks made by the Reverend Jeremiah Wright, his former pastor and, until shortly before the speech, a participant in his campaign. Obama framed his response in terms of the broader issue of race in the United States. The speech's title was taken from the Preamble to the United States Constitution.
Document 9: United States presidential election, 2008: The United States presidential election of 2008 was the 56th quadrennial presidential election. It was held on Tuesday, November 4, 2008. Democratic Party nominees Barack Obama, a U.S. Senator from Illinois, and his running mate Joe Biden, a long-time U.S. Senator from Delaware, defeated Republican Party nominees John McCain, a long-time and current U.S. Senator from Arizona, and his running mate Sarah Palin, a Governor of Alaska. Obama became the first African American ever to be elected president of the United States, and Joe Biden became the first Roman Catholic ever elected vice president.
Document 10: Tullian Tchividjian: William Graham Tullian Tchividjian, commonly known as Tullian Tchividjian (pronounced TUHL-ee-uhn cha-VI-jin; born July 13, 1972), is a deposed pastor originally in the Presbyterian Church in America denomination, and author of more than a half dozen books about Christianity and current issues, including "One Way Love" and "It is Finished" (David C. Cook, 2013 and 2015). A grandson of Christian evangelist Billy Graham, Tchividjian founded an Evangelical Presbyterian Church congregation before being tapped to merge it and become the second senior pastor of Coral Ridge Presbyterian Church in Fort Lauderdale, Florida (after the church's late founder and longterm leader, D. James Kennedy). Serving 2009-2015, Tchividjian resigned after allegations of an extramarital affair, the first of more than one to which he would admit, the initial admission being sufficient for his being deposed by his denomination as unfit for Christian ministry. In addition to his book publications, Tchividjian blogged for some time for The Gospel Coalition, has contributed to a variety of secular and Christian publications, and has appeared on a variety of major televisions news programs. As of December 2016, the Christian publisher David C. Cook remained committed to publishing Tchividjian's next book.
Document 11: A New Beginning: "A New Beginning" is the name of a speech delivered by United States President Barack Obama on 4 June 2009, from the Major Reception Hall at Cairo University in Egypt. Al-Azhar University co-hosted the event. The speech honors a promise Obama made during his presidential campaign to give a major address to Muslims from a Muslim capital during his first few months as president.
Document 12: Jeremiah Wright controversy: The Jeremiah Wright controversy gained national attention in the United States, in March 2008 when ABC News, after reviewing dozens of U.S. Presidential candidate Barack Obama's pastor Jeremiah Wright's sermons, excerpted parts which were subject to intense media scrutiny. Wright is a retired senior pastor of Trinity United Church of Christ in Chicago and former pastor of President Obama. Obama denounced the statements in question, but critics continued to press the issue of his relationship with Wright. In response to this, he gave a speech titled "A More Perfect Union", in which he sought to place Wright's comments in a historical and sociological context. In the speech, Obama again denounced Wright's remarks, but did not disown him as a person. The controversy began to fade, but was renewed in late April when Wright made a series of media appearances, including an interview on "Bill Moyers Journal", a speech at the NAACP, and a speech at the National Press Club. After the last of these, Obama spoke more forcefully against his former pastor, saying that he was "outraged" and "saddened" by his behavior, and in May he resigned his membership in the church.
Document 13: Stewart Cleveland Cureton: Stewart Cleveland Cureton Born March 24, 1930,To Santee Argo Cureton and Martha Arrye Henderson Cureton. He is the sixth child of seven. He was educated in the Greenville County school system, graduating from Sterling High School in 1949. Having already accepted God's call to preach at the age of seventeen, he continued his education at Benedict College, Columbia, South Carolina, earning a Bachelor of Arts degree in 1953. On December 27, 1954, Dr. Cureton married the love of his life, Claudette Hazel Chapman Cureton. From their union four children were born, Ruthye, Stewart Jr., Santee Charles, and Samuel. Samuel followed his father into the ministry. Dr. Cureton modeled his belief that an effective leader needs both a "baptized heart and a baptized brain", and through the years continued his education by studying at numerous other colleges and universities throughout North Carolina and South Carolina. He was awarded the Doctor of Divinity degree from Morris College, Sumter, South Carolina and Benedict College, Columbia, South Carolina. He began his pastorate in 1953 as pastor of Old Pilgrim Baptist Church, Greenville, South Carolina: New Galilee Baptist Church, Walhala, South CArolina; Rock Hill Baptist Church #2, Greenville, South Carolina; Griffin Ebenezer Baptist Church, Pickens, South Carolina and Gethsemane Baptist Church, Chester, South Carolina. In 1965 he was called to pastor Reedy Fork Baptist Church and Reedy River Baptist Church which was his home church. In 1978 he became the full-time pastor of Reedy River Baptist Church. Under his leadership the membership and influence of Reedy River BAptist Church grew exponentially. He led the membership to build two new sanctuaries and a Family Life Center that became the model for many other churches in the Greenville area. Dr. Cureton was committed to education, understanding that it is only through education that people can reach their full potential. Dr. Cureton rose from humble beginnings to become a local, state and national leader. Among his many accomplishments: served as Moderator of the Reedy River Baptist Association; served as President of the Baptist Educational & Missionary Convention of South CArolina (1986-1991); served as Second Vice President, Vice President-at-Large and President of the NAtional Baptist Convention,USA,Inc; appointed as a Commission Member of the United States Presidential Scholars Program by President Bill Clinton (1991-2000); awarded the Order of the Palmetto Award; served as member of the Benedict College Board of Trustees; served as member of the Morris College Board of Trustees. – Steward Cleveland Cureton departed this earthly life and went to his heavenly home on December 30, 2008), also known as S.C. Cureton, was President of the National Baptist Convention from March 1999 to September 1999. Cureton, then Vice President-At-Large, took over the leadership of the Convention when his predecessor Henry Lyons was forced to resign. He served the remainder of the Lyons' tenure. Cureton, a former math teacher at Sterling High School and Beck High School, was pastor of Reedy River Missionary Baptist Church in South Carolina at the time of his death. He was an advocate on state issues such as the establishment of a holiday honoring Martin Luther King in Greenville County. Cureton was instrumental in bringing King to Greenville for a speech in April 1967. Dr. Cureton was out front in integrating the Public Libraries in Greenville County, South Carolina. He died on December 30, 2008 aged 78.
Document 14: Jerry Wurf: Jerome "Jerry" Wurf (May 18, 1919 – December 10, 1981) was a U.S. labor leader and president of the American Federation of State, County and Municipal Employees (AFSCME) from 1964 to 1981. Wurf was a friend of Martin Luther King Jr., and was arrested multiple times for his activism, notably during the Memphis Sanitation Strike and was released just in time to hear Martin Luther King Jr's 'I've Been to the Mountaintop' oratory at the strike, assassination the next day, and attend his funeral.
Document 15: Perry Noble: Perry Noble (born June 24, 1971) is an American preacher, author, and the former senior pastor at NewSpring Church, a megachurch located in Anderson, South Carolina. His weekly sermons were watched by over 32,000 people at 11 satellite campuses across the state of South Carolina with an additional 7,200 viewers tuned in weekly via online live stream. He has gained notability as the senior pastor at the largest church in the South Carolina Baptist Convention and second fastest-growing church in the United States. Noble gained notoriety for controversial remarks made regarding the Ten Commandments during a Christmas Eve service at his church, as well as his forced removal from the church as pastor.
ground_truth: March 18, 2008