More than 13,000 Conversos were put on trial during the first 12 years of the Spanish Inquisition. Hoping to eliminate ties between the Jewish community and Conversos, the Jews of Spain were expelled in 1492 ..
A second reason, specifically for using Morse Code during the Second World War, was encoding... Nowadays equipment exists to take an outgoing radio signal and automatically encrypt the data or voices during transmission, this is 'on-line' encryption...
From there, the Germans dug trenches. When the British and French forces tried to pass these trenches, they were killed by machine guns and chemicals (chlorine gas). The Allied forces could not pass through those trenches effectively, and therefore, dug their own trenches. **************************************... Because of this, the warfare became slow because neither forces were capable of penetrating the opposing force's trenches. Thus, TRENCH WARFARE.