Well could it be ww2 cause that's when we fought the japs? need more info to help out
<em><u>In the 3rd Century BC, Archimedes: invented</u></em><em><u> </u></em><em><u>the sciences of mechanics and hydrostatics.discovered the laws of levers and pulleys, which allow us to move heavy objects using small forces. invented one of the most fundamental concepts of physics – the center of gravity.</u></em>
Answer: i try to do some research but I couldn't find anything.
Explanation:
sorry