Background: Sergio Leonel "Kun" Aguero (Spanish pronunciation: ['serxjo le.o'nel kun a'gwero]; born 2 June 1988) is an Argentine professional footballer who plays as a striker for Premier League club Manchester City and the Argentine national team. Aguero began his career at Independiente. On 5 July 2003, he became the youngest player to debut in the Argentine Primera Division at 15 years and 35 days, breaking the record previously established by Diego Maradona in 1976. In 2006, Aguero moved to Europe to play for La Liga side Atletico Madrid, for a transfer fee of EUR23 million.
Context: Aguero was selected for the Argentina U17 team to participate at the 2004 U-16 South American Championship in Paraguay in September. He participated in all of Argentina's group stage matches, scoring in a 2-1 win against the United States and a 3-1 win against Ecuador to help Argentina finish top of their group. Aguero scored in the 47th minute of Argentina's 1-0 quarter-final victory against Peru, setting up a semi-final match against Colombia which Argentina lost 2-0.  Aguero represented Argentina at two FIFA World Youth Championships, winning back-to-back world titles. He was part of the team that won the 2005 edition in the Netherlands, alongside his future 2008 Olympics squad teammates Fernando Gago and Lionel Messi. At the 2007 FIFA U-20 World Cup, held in Canada, Aguero scored twice and helped set up three goals in a 6-0 win over Panama in the second game of the group stage of the tournament. He then scored the only goal in Argentina's third match against North Korea from a free kick. Having qualified to the round of 16, he scored two of the three goals against Poland that would eventually give them a 3-1 win to advance to the next round. Argentina defeated Mexico in the quarter-finals and Chile in the semi-finals, and faced the Czech Republic in the finals, a team they drew 0-0 in the group stage. Aguero captained and scored the equaliser in the 62nd minute, leading to a 2-1 victory. In addition, Aguero won the Golden Boot of the tournament, scoring six goals in seven, and the Golden Ball as the best player of the tournament.  As a member of the Argentine squad for the 2008 Beijing Olympics, Aguero scored two goals in the space of five minutes in the semi-final 3-0 win over Brazil on 19 August 2008. Argentina went on to win its second consecutive gold medal at the Olympic tournament.
Question: How did his team do during those championships?
Answer: winning back-to-back world titles.

Background: Miami Sound Machine is an American band of Latin-influenced music featuring the vocals of Cuban-born Gloria Fajardo Garcia (later Gloria Estefan). The band was established in 1975 originally as Miami Latin Boys by Emilio Estefan Jr. and became very successful after joining with Gloria Fajardo (Estefan) in 1977. The band had a number of albums and a string of hit singles until 1989. The band's 1985 album Primitive Love credited the band whereas their follow-up album Let It Loose in 1987 adopted the name Gloria Estefan and Miami Sound Machine.
Context: Following a massive world tour that lasted over a year (mid 1985-late 1986), tensions and rifts between original core members and zealous new members had taken their toll. Following that tour, both original MSM guitarist Wesley B. Wright and founding bassist Juan Marcos Avila had left the group, along with keyboardist Roger Fisher. Emilio was now taking a behind-the-scenes producer role and no longer performing live. What was left of the current MSM, plus new members (Jorge "George" Casas on bass, Clay Ostwald on keyboards, and guitarist John DeFaria), returned to the studio in early 1987. With only one other core member, "Kiki" Garcia, remaining, Gloria Estefan was given top billing and the band's name was changed to Gloria Estefan and Miami Sound Machine to jump on the sudden success of Gloria's unique vocal ability and bubbly personality on TV.  In late 1987, they released their next album, Let It Loose, and it went multi-platinum, with three million copies sold in the US alone. It featured the hits "Anything for You" reaching number 1 on the Billboard Hot 100, "1-2-3" making it to number 3, "Betcha Say That" to number 36, "Rhythm Is Gonna Get You" to number 5, and "Can't Stay Away from You" to number 6. "Can't Stay Away from You", "Anything for You" and "1-2-3" were all top charting singles on the Adult Contemporary hits as well.  Another world tour began and the group traveled for the first time to Europe, South America and an even more extensive tour in the United States, culminating in a finale with massive sold-out concert in their hometown of Miami, Florida, which was recorded and later sold on VHS. By 1988, founding member "Kiki" Garcia quit. With no other core members remaining other than Gloria herself, the "Miami Sound Machine" moniker was to be used from that point on for concerts and live performances only.  In 1988, after the worldwide chart success of single "Anything for You", her Let it Loose album was repackaged overseas as Anything for You. It became the band's first UK number 1 album, selling over a million copies. It was the biggest selling album of the year in The Netherlands, staying at number 1 for 22 weeks. The album also took top honors in Australia and Canada, launching Gloria Estefan to superstar status.
Question: what was the biggest accomplishment/
Answer:
It became the band's first UK number 1 album,