Name one document from another country’s past that the USA used in writing their constitution and what they've used from it.

It was the Articles of Confederation that provided the necessary structure to the new nation during and after the American Revolution

I think the document is Magma Carta and because it  exercised a strong influence both on the United States Constitution and on the constitutions of the various states.

in his book, the riddle of the rosetta stone, james giblin talks about how there was a young british polymath and physician named thomas young who made a lot of advances on the deciphering of the rosetta stone. he says that even though young made a lot of mistakes because he was working under false assumptions, he also made huge contributions like deciphering three out of the seven symbols (more than anyone else before him). young published his findings and continued his good work but he wasn't able to progress much further due to some unfavorable situations, he still laid the basis for many other scholars and of course for the man who has been generally known to have deciphered it, jean-françois champollion

the answer to your question is true