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. . . 6.2 Genocide concentration camps and slave labour Afonso de Albuquerque After the original natural grass playing surface died the Astrodome became the first major sports venue to install artificial turf which became known as AstroTurf in another technological first the Astrodome featured the "Astrolite" which was the first animated scoreboard the Astrodome was renovated in 1988 expanding seating and altering many original features. ! .

. Advances were made in nearly every aspect of naval warfare most notably with aircraft carriers and submarines Although aeronautical warfare had relatively little success at the start of the war actions at Taranto Pearl Harbor and the Coral Sea established the carrier as the dominant capital ship in place of the battleship in the Atlantic escort carriers proved to be a vital part of Allied convoys increasing the effective protection radius and helping to close the Mid-Atlantic gap. Carriers were also more economical than battleships because of the relatively low cost of aircraft and their not requiring to be as heavily armoured. Submarines which had proved to be an effective weapon during the First World War were anticipated by all sides to be important in the second the British focused development on anti-submarine weaponry and tactics such as sonar and convoys while Germany focused on improving its offensive capability with designs such as the Type VII submarine and wolfpack tactics. Gradually improving Allied technologies such as the Leigh light hedgehog squid and homing torpedoes proved victorious over the German submarines.[citation needed]. The Texas Ranger Division of the Texas Department of Public Safety is a law enforcement agency with statewide jurisdiction Over the years the Texas Rangers have investigated crimes ranging from murder to political corruption They have acted as riot police and as detectives protected the Texas governor tracked down fugitives and functioned as a paramilitary force both for the republic and the state the Texas Rangers were unofficially created by Stephen F Austin in 1823 and formally constituted in 1835 the Rangers were integral to several important events of Texas history and some of the best-known criminal cases in the history of the Old West; 148 Jessica Farrar Democratic 1994 North and Northwest Houston mainly within Loop 610 (including Houston Heights).