<span>that Hellenistic inventor and mathematician would be : D. archimedes
During his bath time, archimedes found out that if an object is partially or completely submerged in a fluid, it will create a force of magnitude which is equal to the fluid in opposite direction from where it's come from, which is leveraged in the development of modern ships</span>
Before his presidency and after T.R. immersed himself with issues concerning land conservation and animal welfare fighting for them with unmatched passion compared to the other presidents.
I think it’s Thomas hobbles but if it’s wrong I’m sorry I’m not 100% on my answer