What did inventor eli whitney receive a patent for on this day in 1794? ?

What are contributions made by rene descartes

How might hammurabi’s code have prevented a single ruler from imposing,or forcing his or her will on people

After the success of the sputnik launch, the united states feared that they would never be able to launch their own satellite, the ussr had used technology developed by the united states, the soviets had superior nuclear capabilities, that any future us satellites would not be as successful.