He was a jurist, a statesman and a political leader of the Revolutionary period;George Washington sent him a pamphlet on the cultivation of potatoes;and he had a lot to do with steam.Who is he?

• 在革命时期，他是个法律专家、政治家和政治领导者，乔治华盛顿还曾经送给他一本栽种马铃薯的小册子，他对蒸汽的发明有诸多贡献。