Slide guitar is a form of technique linked with blues music. It was during the 20th century that this technique developed among blues musicians in the American South. There are also links of its origin to the diddley-bow from Africa. However, it was also almost the same time when the Hawaiian (steel) guitar—a style that emerged in the late 19th century but executed a similar slide technique—was gaining popularity on the mainland through Hawaiin concert tours. In conclusion, it is likely that both blues music and Hawaiian guitar paved their own way to become influential in the course of their early development.
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The Resistance Movement and fight in Normandy helped the Allies win the war in that the Allies could contain the march and occupation of the German troops in France. We are talking about "Operation Overload" that landed in Normandy, France on June 6, 1944. Approximately a thousand planes got to Normandy, followed by an impressive navy Allied force of about 5,000 ships and vessels. The Allied forces had used other maneuvers such as "Operation Fortitude" to deceive the enemy, so the German troops had to defend a big portion of the Atlantic coast. This complicated the reaction of the German troops.