Who was the first us president to resign from office

Richard Nixon became the first American President ever to resign from office.

Richard Nixon

Explanation:

https://en.wikipedia.org/wiki/Richard_Nixon says that Nixon was the only US president to resign from office, making him the first.

can we get more information?

explanation:

answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44