Problem: Evanescence () is an American rock band founded in Little Rock, Arkansas, in 1995 by singer/pianist Amy Lee and guitarist Ben Moody. After recording independent albums, the band released their first full-length album, Fallen, on Wind-up Records in 2003. Fallen sold more than 17 million copies worldwide and helped the band win two Grammy Awards out of seven nominations. A year later, Evanescence released their first live album, Anywhere but Home, which sold more than one million copies worldwide.

A spokesperson for the band's label confirmed on July 14, 2006, that bassist Will Boyd had left the band for "not wanting to do another big tour" and wanting "to be close to his family." Amy Lee originally broke the news to the fans in a post on an unofficial Evanescence site, EvBoard.com. In an interview with MTV, posted on their website on August 10, 2006, Lee announced that Tim McCord, former Revolution Smile guitarist, would switch instruments and play bass for the band.  The album progressed slowly for several reasons, including Amy Lee's desire to maximize the creative process and not rush production, other band members' side projects, Balsamo's stroke, and turbulence within their management. Although Lee stated on the fan forum Evboard that Evanescence's new album would be completed in March 2006, the release was pushed back allegedly because "Wind-up...wanted to make a few changes to the upcoming single 'Call Me When You're Sober'", which hit modern rock and alternative rock radio on August 7, 2006. The 13-track album The Open Door was released in Canada and the United States on October 3, 2006; the United Kingdom on October 2, 2006; and Australia on September 30, 2006. The album sold 447,000 copies in the United States in its first week of sales and earned their first No. 1 ranking on the Billboard 200 album chart. The music video for "Call Me When You're Sober" was shot in Los Angeles and is based on the fairy tale Little Red Riding Hood. The Open Door became available for pre-order on the iTunes Store on August 15, 2006; the music video for "Call Me When You're Sober" was also made available.  The tour for The Open Door began on October 5, 2006, in Toronto and included locations in Canada, the U.S. and Europe during that year. This first tour continued on January 5, 2007, and included stops in Canada (alongside band Stone Sour), Japan and Australia (alongside band Shihad) and then returned to the U.S. for a second tour in the spring (alongside bands Chevelle and Finger Eleven). As part of their tour, Evanescence performed on April 15, 2007, on the Argentinian festival Quilmes Rock 07 along with Aerosmith, Velvet Revolver and other local bands. They also co-headlined on the Family Values Tour 2007 along with Korn and other bands. The group closed their European tour with a sell-out concert at the Amphi in Ra'anana, Israel, on June 26, 2007, and finished the album tour on December 9, 2007.  On May 4, 2007, John LeCompt announced that he had been fired from Evanescence, and also stated that drummer Rocky Gray had decided to quit. They both would join Moody to eventually form the band We Are the Fallen. Wind-up issued a press release on May 17, 2007, stating that two Dark New Day members, drummer Will Hunt and guitarist Troy McLawhorn, would be joining the band to replace LeCompt and Gray. It was initially stated that Hunt and McLawhorn would tour with Evanescence until the end of the Family Values Tour in September 2007, but both continued to play with the band through The Open Door tour.

who replaced him?

Answer with quotes: guitarist Troy McLawhorn,

Question:
Born and raised in Mbewuleni, Cape Province, Union of South Africa, Mbeki is one of four children of Epainette and Govan Mbeki. The economist Moeletsi Mbeki is one of his brothers. His father was a stalwart of the African National Congress (ANC) and the South African Communist Party. He is a native Xhosa speaker.
Together with Oliver Tambo, Mbeki left London for Lusaka in April 1971 to take up the position of assistant secretary of the ANC's Revolutionary Council (RC). This was the first time in nine years that Mbeki was setting foot on African soil. The aim of the RC at this time was to bridge an ever-widening gap between the ANC in exile and the people back home. In Lusaka, Mbeki was housed in a secret location in Makeni, south-west of the city. Later, Mbeki moved over to work in the ANC's propaganda section. But he continued to attend RC meetings. Four months after his arrival in Lusaka, Mbeki travelled to Beichlingen to deliver a speech on behalf of the ANC's Executive Committee at the YSS summer school. This was a turning point in Mbeki's life as it was the first time he spoke on behalf of the ANC as opposed to the ANC Youth League.  In December 1972, Mbeki joined Tambo at Heathrow Airport to meet Mangosuthu Buthelezi to discuss mass resistance to apartheid. Mbeki is credited with facilitating the establishment of Inkatha - it was his responsibility to nurture the relationship between Buthelezi and the ANC. Mbeki was deployed to Botswana in 1973 to facilitate the development of an internal underground.  Mbeki's life took a significant turn on 23 November 1974 when he married Zanele Dlamini. The wedding ceremony took place at Farnham Castle, the residence of Zanele's sister Edith and her husband, Wilfred Grenville-Grey. Adelaide Tambo and Mendi Msimang stood in loco-parentis for Mbeki while Essop Pahad was Mbeki's best man. The wedding, according to ANC rules, had to be approved by the organisation - a rule that applied to all permanently deployed members of the ANC.
Answer this question using a quote from the text above:

What was his mission in Lusaka?

Answer:
Mbeki travelled to Beichlingen to deliver a speech on behalf of the ANC's Executive Committee at the YSS summer school.