Answer: Percy Spencer
Percy Spencer, was an American engineer. He was the inventor of the microwave oven in 1945, serving the Raytheon company.
The calorific effect of microwaves was discovered by the American Percy Spencer. While experimenting with radars and microwaves, he noticed that the candy bar in his pocket had almost melted. He sought the explanation of this fact, the grain of corn under the effect of these waves and within seconds they were transformed into popcorn. The microwaves had agitated the water molecules contained in the corn kernels, rubbed them against each other, and warmed them.
The 18th amendment outlawed the selling and making liquor in the United States in the 1920's. Although this was established, many people still consumed pre-purchased liquor,made it themselves, or famous gangsters like Al Capone sold it illegally in secret bars. Overall, it didn't really accomplish anything because even though it wasn't legal, people were drinking more than ever and crime increased majorly in cities.
In population rankings of cities in the United States, Chicago moved up the furthest in the top ten rankings between 1850 and 1880.
In 1850, Chicago wasn't even in the top ten list. Chicago's population in 1850 was only around 30,000. But by 1880, the city of Chicago had expanded rapidly, to a population of over 500,000 and into the #3 spot on the list of America's largest cities. (On some lists, you might see Chicago as #4 on the list at that time, but that's if they count New York and Brooklyn separately rather than counting the New York metropolitan area as a unit.)
Counties, municipalities, townships, school districts, and special districts
