查找有关美国第四任总统的信息。
美国第四任总统是詹姆斯麦迪逊。 He was elected in 1808 and served as President from March 4, 1809 to March 4, 1817. He was an author of the U.S. Constitution and a key figure in the formation of the ruling party of the US at the time, the Democratic-Republican派对。他在 1812 年对英国的战争中发挥了重要作用。