Electrostatic plotter. An electrostatic plotter is a type of plotter that draws images on paper with an electrostatic process. They are most frequently used for Computer-Aided Engineering (CAE), producing raster images via either a Liquid Toner or a Dry Toner model.
1 Japan attacked Pearl Harbor because the U.S. enacted an embargo on all oil supplies to Japan. 2  The reason for the embargo is because Japan was invading China. 3  The U.S. embargo cutoff 90% of Japans resources, which crippled their economy and most importantly military.
The US had no choice but to enter WWII when it did. Once the Japanese attacked Pearl Harbor, there was no way that the US could stand by and allow that to happen without a response. In hindsight, the US should probably have gotten involved against Germany earlier. We know now that the Nazis were a totally evil regime.