<prompt> Qedela umusho olandelayo: I-ukulele ye-harp yavela ngawo-1910, lapho isiginci se-harp sasithola ukuthandwa okuthile, futhi i-ukulele yayisanda kuqala ukuthandwa ezweni lonke e-United States ngenxa yokusetshenziswa kwayo emikhosini  <response>: IPanama-Pacific International Exposition ka-1915. 