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2010s saw multiple new sounds in house music developed by numerous DJs. Sweden knew a prominence of snare-less "Swedish progressive house" with the emergence of Sebastian Ingrosso, Axwell, Steve Angello (These three formed a trio called Swedish House Mafia), Avicii, Alesso, etc. Netherlands brought together a concept of "Dirty Dutch", electro house subgenre characterized by very abrasive leads and darker arpeggios, with prominent DJs Chuckie, Hardwell, Laidback Luke, Afrojack, R3hab, Bingo Players, Quintino, Alvaro, Cedric Gervais, 2G, etc. Elsewhere, fusion genres derivative of 2000s progressive house returned to prominence, especially with the help of DJs Calvin Harris, Eric Prydz, Mat Zo, Above & Beyond and Fonzerelli in Europe, Deadmau5, Kaskade, Steve Aoki, Porter Robinson and Wolfgang Gartner in the US and Canada. The growing popularity of such artists led to the emergence of electro house and progressive house blended sounds in popular music, such as singles Lady Gaga's "Marry the Night", The Black Eyed Peas' "The Best One Yet (The Boy)" and the will.i.am and Britney Spears "Scream & Shout". Big room house found increasing popularity since 2010, particularly through international dance music festivals such as Tomorrowland, Ultra Music Festival, and Electric Daisy Carnival.
What was different about US progressive house music?
A: unanswerable

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A TiVo service update in July 2008 allowed the system to search and play YouTube videos. In January 2009, YouTube launched "YouTube for TV", a version of the website tailored for set-top boxes and other TV-based media devices with web browsers, initially allowing its videos to be viewed on the PlayStation 3 and Wii video game consoles. In June 2009, YouTube XL was introduced, which has a simplified interface designed for viewing on a standard television screen. YouTube is also available as an app on Xbox Live. On November 15, 2012, Google launched an official app for the Wii, allowing users to watch YouTube videos from the Wii channel. An app is also available for Wii U and Nintendo 3DS, and videos can be viewed on the Wii U Internet Browser using HTML5. Google made YouTube available on the Roku player on December 17, 2013 and in October 2014, the Sony PlayStation 4.
What was introduced in June 2008?
A: unanswerable

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In the 20th century, as Beijing, Shanghai, Nanjing, and Wuhan had all been occupied by the Japanese during the Second Sino-Japanese War, the capital of the Republic of China had been temporary relocated to Chongqing, then a major city in Sichuan. An enduring legacy of this move is that nearby inland provinces, such as Shaanxi, Gansu, and Guizhou, which previously never had modern Western-style universities, began to be developed in this regard. The difficulty of accessing the region overland from the eastern part of China and the foggy climate hindering the accuracy of Japanese bombing of the Sichuan Basin, made the region the stronghold of Chiang Kai-Shek's Kuomintang government during 1938-45, and led to the Bombing of Chongqing.
What are some reasons for the lack of accurate Japanese bombing during the Second Sino-Japanese War in the Sichuan Basin?
A: The difficulty of accessing the region overland from the eastern part of China and the foggy climate

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In 1953, Korolev was given the go-ahead to develop the R-7 Semyorka rocket, which represented a major advance from the German design. Although some of its components (notably boosters) still resembled the German G-4, the new rocket incorporated staged design, a completely new control system, and a new fuel. It was successfully tested on August 21, 1957 and became the world's first fully operational ICBM the following month. It would later be used to launch the first satellite into space, and derivatives would launch all piloted Soviet spacecraft.
When was the R-7 Semyorka rocket tested successfully?
A:
August 21, 1957