Salah played his youth football with El Mokawloon. He made his senior team debut in the Egyptian Premier League coming on as a substitute on 3 May 2010 in a 1–1 away draw against El Mansoura. During the 2010–11 season Salah continued earning minutes on the pitch, eventually becoming a regular in the team.
On 6 May 2010, May was re-elected MP for Maidenhead with an increased majority of 16,769 – 60% of the vote. This followed an earlier failed attempt by the Liberal Democrats to unseat her in 2005, as one of that party's leading "decapitation-strategy" targets.
The 2010 general election resulted in the Conservatives, led by Cameron, winning the largest number of seats (306). This was, however, 20 seats short of an overall majority and resulted in the nation's first hung parliament since February 1974.
On May 6, 2010, the Dow Jones Industrial Average posted its largest intraday percentage drop since the crash on October 19, 1987, with a 998-point loss later being called the 2010 Flash Crash (as the drop occurred in minutes before rebounding).
Prince Charles presented him with his flying brevet (wings) on 7 May 2010 at a ceremony at the Army Air Corps Base (AAC), Middle Wallop. Harry had let it be known he intended to fly Apache attack helicopters if he was successful in passing the rigorous Apache training course. This would allow him to see active military service again on the frontline in Afghanistan.
In Europe, Riot Games initially signed an international licensing partnership with GOA, the video games department of Orange's Content Division, and Europe's largest gaming portal. On October 13, 2009, GOA and Riot announced that they would start channeling server access for players located in Europe to GOA's dedicated servers. This partnership did not last; on May 10, 2010, Riot Games announced that they would take over the distribution and operation of the game in Europe. To do so, Riot Games established a European HQ in Dublin.
On 11 May 2010, following the resignation of Gordon Brown as Prime Minister and on his recommendation, Queen Elizabeth II invited Cameron to form a government. At age 43, Cameron became the youngest Prime Minister since Lord Liverpool in 1812, beating the record previously set by Tony Blair in May 1997.
Cameron outlined how he intended to "put aside party differences and work hard for the common good and for the national interest." As one of his first moves Cameron appointed Nick Clegg, the leader of the Liberal Democrats, as Deputy Prime Minister on 11 May 2010.
On 12 May 2010, Turkey and Russia signed 17 agreements to enhance cooperation in energy and other fields, including pacts to build Turkey's first nuclear power plant and further plans for an oil pipeline from the Black Sea to the Mediterranean Sea. The leaders of both countries also signed an agreement on visa-free travel, enabling tourists to get into the country for free and stay there for up to 30 days.
On 12 May 2010, when May was appointed Home Secretary and Minister for Women and Equality by Prime Minister David Cameron as part of his first Cabinet, she became the fourth woman to hold one of the British Great Offices of State, after Margaret Thatcher (Prime Minister), Margaret Beckett (Foreign Secretary) and Jacqui Smith (Home Secretary).
In May 2010, the IMF participated, in 3:11 proportion, in the first Greek bailout that totaled €110 billion, to address the great accumulation of public debt, caused by continuing large public sector deficits. As part of the bailout, the Greek government agreed to adopt austerity measures that would reduce the deficit from 11% in 2009 to "well below 3%" in 2014.
He also started as Chelsea were victorious against Portsmouth in the 2010 FA Cup final, however he would come off injured shortly before half-time after a tackle by Kevin-Prince Boateng. As a result of the injury, Ballack was not able to participate in the 2010 World Cup.
On May 19, 2010, Facebook's website was temporarily blocked in Pakistan until Facebook removed the contest from its website at the end of May. Sidiqque (Pakistani Deputy Attorney General) also asked its UN representative to raise the issue with the United Nations General Assembly.
On the Western Conference Finals, where they faced the Phoenix Suns. In Game 2, Bryant finished the game with 13 assists, setting a new playoff career-high; it was the most assists by a Laker in the playoffs since Magic Johnson had 13 in 1996.
On May 20, 2010, Tesla and Toyota announced a partnership to work on electric vehicle development, which included Toyota's US$50 million future conditional investment in Tesla and Tesla's US$42 million purchase of a portion of the former NUMMI factory.
On Wednesday 26 May 2010, a permanent plaque was unveiled on the Centenary Stand at Anfield to honour the Juventus fans who died 25 years earlier. This plaque is one of two permanent memorials to be found at Anfield, along with one for the 96 fans killed in the Hillsborough disaster in 1989.