The toaster was invented before World War I, which lasted from 1914 to 1918. An electric toaster was invented in 1893, but it was not commercially successful. A successful electric toaster was invented in 1909, also before WWI. But the pop-up toaster was not invented until after WWI, in 1921. So it is likely that refinements of the toaster invention were continuing during the war.
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toothpaste was used before the wheel was invented
One thing that was happening in the world at the time "The Wealth of Nations" was written was the Industrial Revolution in the United States.
The first time bomb was invented at Yale University. It was invented by David Bushnell and used in the first submarine used in combat.
Apathy. When no one rose to object to Hitler's actions against the Jews he realized that the world was going to allow him to kill as many of them as he could in the time that he had left. === ===
Albert 2 : Albert was a king in Belgium at the time world war 2 was going on