In 1790, george washington wrote in a letter, "my station is new; and, if i may use the expression, i walk on untrodden ground." what was he talking about?

its's because no one had ever been President before, so there was no example for Washington to follow as he was the first president. All the decisions he had to make would be made for the first time. It was as if he was travelling somewhere that no one had been before, ground over which no one had previously walked.

It depends on what you believe, if you’re christian that you would have been told that the first humans were created by god and that we’re all decedent's from adam and eve but scientist say otherwise

You can drink laxative, or  do this exercise when you are sitting in the bathroom on the toilet. to relieve  constipation  fast or in about 1 minute, pinch your nose after your usual exhalation. start holding your breath. but do not mouth breath during this just hold your breath.