Black & Decker introduced which handy cordless household item in 1979?

Bjarni Herjolfsson sold his ship to which Norse explorer who used it to reach Vinland around 1000? Bjorn Borg and Stefan Edberg helped which country reach the Davis Cup final seven times in the 1980s? Bjorn Borg won Wimbledon in 1980; which Swedish man won it in 1990? Bjornstjerne Bjornson won the 1903 Nobel Prize in Literature; which fellow Norwegian, author of "The Master Builder," n… "Black Boy" is a 1945 autobiography by which author of "Native Son"? "Black, Brown and Beige" is a 1943 jazz suite by which bandleader nicknamed "Duke"? Black Friday, September 24, 1869, resulted from Jay Gould and Jim Fisk's attempt to corner the U.S. supply of what? In the United States, Black History Month is observed during which month?