Context: The transition from the mandolino to the mandolin began around 1744 with the designing of the metal-string mandolin by the Vinaccia family, 3 brass strings and one of gut, using friction tuning pegs on a fingerboard that sat "flush" with the sound table. The mandolin grew in popularity over the next 60 years, in the streets where it was used by young men courting and by street musicians, and in the concert hall. After the Napoleonic Wars of 1815, however, its popularity began to fall. The 19th century produced some prominent players, including Bartolomeo Bortolazzi of Venice and Pietro Vimercati. However, professional virtuosity was in decline, and the mandolin music changed as the mandolin became a folk instrument; "the large repertoire of notated instrumental music for the mandolino and the mandoline was completely forgotten". The export market for mandolins from Italy dried up around 1815, and when Carmine de Laurentiis wrote a mandolin method in 1874, the Music World magazine wrote that the mandolin was "out of date." Salvador Léonardi mentioned this decline in his 1921 book, Méthode pour Banjoline ou Mandoline-Banjo, saying that the mandolin had been declining in popularity from previous times.

Question: What year was the beginning of the transition from mandolino to mandolin?
Answer: 1744

Question: Where did the mandolin grow in popularity? 
Answer: in the streets where it was used by young men courting and by street musicians, and in the concert hall

Question: When did the mandolin's popularity begin to fall?
Answer: After the Napoleonic Wars of 1815, however, its popularity began to fall

Question: Who were two of the promiment players in the 19th century?
Answer: Bartolomeo Bortolazzi of Venice and Pietro Vimercati

Question: What year did the export market for manodlins from Italy dry up?
Answer: 1815

Question: What began around 1474?
Answer: Unanswerable

Question: What wars took place in 1851?
Answer: Unanswerable

Question: What dried up in Italy around 1851?
Answer: Unanswerable

Question: What did Laurentiis de Carmine write?
Answer: Unanswerable

Question: What did Leonardi Salvador write?
Answer: Unanswerable

Question: What year was the end of the transition from mandolino to mandolin?
Answer: Unanswerable

Question:  Where did the mandolin shrink in popularity?
Answer: Unanswerable

Question:  When did the mandolin's popularity begin to rise?
Answer: Unanswerable

Question:  Who were two of the prominent players in the 15th century?
Answer: Unanswerable

Question:  What year did the export market for mandolins from France dry up?
Answer: Unanswerable