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The Yalu River also known by Koreans as the Amrok River or Amnok River. It is a river on the border between North Korea and China.
During the Holocaust<span>, the creation of </span>ghettos<span> was a key step in the </span>Nazi process of separating, persecuting, and ultimately destroying Europe's Jews..Ghettos were<span> set up to segregate Jews from the rest of the population.</span>.
Here are some of the weapons first used in WWI. Airplanes, Derigables, poison gas, flamethrower, and tanks. Other weapons that were invented before the war but not used on a wide scale or were not reliable until WWI were the machine gun, submarines, torpedoes, small mortars and very large caliber artillery. WWI also saw the use of the radio for the first time in combat conditions.
All of the above would be important factors .