Around 1904, which Norwegian explorer confirmed that Earth's magnetic north pole is not fixed?

Around 1900, which inventor built a giant electrical coil but never completed a planned worldwide wireless transmitter? Around 1900 in Kansas, which temperance crusader began attacking saloons with a hatchet? Writer Monroe Rosenfeld is credited with coining which nickname for the stretch of New York's 28th Street where music p… In the 1920s, archaeologist Gertrude Bell founded a national museum in which city? American and European eels are believed to spawn in which sea in the North Atlantic? Around 1908, tea merchant Thomas Sullivan is credited with which invention that avoids the mess of straining leaves? Around 1910, Carl Bosch of BASF learned to make large quantities of which gas from nitrogen and hydrogen? "Standard of the World" was the slogan of which luxury General Motors make?